1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * 4 * Generic Bluetooth USB driver 5 * 6 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org> 7 */ 8 9 #include <linux/dmi.h> 10 #include <linux/module.h> 11 #include <linux/usb.h> 12 #include <linux/usb/quirks.h> 13 #include <linux/firmware.h> 14 #include <linux/iopoll.h> 15 #include <linux/of_device.h> 16 #include <linux/of_irq.h> 17 #include <linux/suspend.h> 18 #include <linux/gpio/consumer.h> 19 #include <asm/unaligned.h> 20 21 #include <net/bluetooth/bluetooth.h> 22 #include <net/bluetooth/hci_core.h> 23 24 #include "btintel.h" 25 #include "btbcm.h" 26 #include "btrtl.h" 27 28 #define VERSION "0.8" 29 30 static bool disable_scofix; 31 static bool force_scofix; 32 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND); 33 34 static bool reset = true; 35 36 static struct usb_driver btusb_driver; 37 38 #define BTUSB_IGNORE 0x01 39 #define BTUSB_DIGIANSWER 0x02 40 #define BTUSB_CSR 0x04 41 #define BTUSB_SNIFFER 0x08 42 #define BTUSB_BCM92035 0x10 43 #define BTUSB_BROKEN_ISOC 0x20 44 #define BTUSB_WRONG_SCO_MTU 0x40 45 #define BTUSB_ATH3012 0x80 46 #define BTUSB_INTEL_COMBINED 0x100 47 #define BTUSB_INTEL_BOOT 0x200 48 #define BTUSB_BCM_PATCHRAM 0x400 49 #define BTUSB_MARVELL 0x800 50 #define BTUSB_SWAVE 0x1000 51 #define BTUSB_AMP 0x4000 52 #define BTUSB_QCA_ROME 0x8000 53 #define BTUSB_BCM_APPLE 0x10000 54 #define BTUSB_REALTEK 0x20000 55 #define BTUSB_BCM2045 0x40000 56 #define BTUSB_IFNUM_2 0x80000 57 #define BTUSB_CW6622 0x100000 58 #define BTUSB_MEDIATEK 0x200000 59 #define BTUSB_WIDEBAND_SPEECH 0x400000 60 #define BTUSB_VALID_LE_STATES 0x800000 61 #define BTUSB_QCA_WCN6855 0x1000000 62 #define BTUSB_INTEL_BROKEN_INITIAL_NCMD 0x4000000 63 64 static const struct usb_device_id btusb_table[] = { 65 /* Generic Bluetooth USB device */ 66 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) }, 67 68 /* Generic Bluetooth AMP device */ 69 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP }, 70 71 /* Generic Bluetooth USB interface */ 72 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) }, 73 74 /* Apple-specific (Broadcom) devices */ 75 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01), 76 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 }, 77 78 /* MediaTek MT76x0E */ 79 { USB_DEVICE(0x0e8d, 0x763f) }, 80 81 /* Broadcom SoftSailing reporting vendor specific */ 82 { USB_DEVICE(0x0a5c, 0x21e1) }, 83 84 /* Apple MacBookPro 7,1 */ 85 { USB_DEVICE(0x05ac, 0x8213) }, 86 87 /* Apple iMac11,1 */ 88 { USB_DEVICE(0x05ac, 0x8215) }, 89 90 /* Apple MacBookPro6,2 */ 91 { USB_DEVICE(0x05ac, 0x8218) }, 92 93 /* Apple MacBookAir3,1, MacBookAir3,2 */ 94 { USB_DEVICE(0x05ac, 0x821b) }, 95 96 /* Apple MacBookAir4,1 */ 97 { USB_DEVICE(0x05ac, 0x821f) }, 98 99 /* Apple MacBookPro8,2 */ 100 { USB_DEVICE(0x05ac, 0x821a) }, 101 102 /* Apple MacMini5,1 */ 103 { USB_DEVICE(0x05ac, 0x8281) }, 104 105 /* AVM BlueFRITZ! USB v2.0 */ 106 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE }, 107 108 /* Bluetooth Ultraport Module from IBM */ 109 { USB_DEVICE(0x04bf, 0x030a) }, 110 111 /* ALPS Modules with non-standard id */ 112 { USB_DEVICE(0x044e, 0x3001) }, 113 { USB_DEVICE(0x044e, 0x3002) }, 114 115 /* Ericsson with non-standard id */ 116 { USB_DEVICE(0x0bdb, 0x1002) }, 117 118 /* Canyon CN-BTU1 with HID interfaces */ 119 { USB_DEVICE(0x0c10, 0x0000) }, 120 121 /* Broadcom BCM20702B0 (Dynex/Insignia) */ 122 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM }, 123 124 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */ 125 { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01), 126 .driver_info = BTUSB_BCM_PATCHRAM }, 127 128 /* Broadcom BCM920703 (HTC Vive) */ 129 { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01), 130 .driver_info = BTUSB_BCM_PATCHRAM }, 131 132 /* Foxconn - Hon Hai */ 133 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01), 134 .driver_info = BTUSB_BCM_PATCHRAM }, 135 136 /* Lite-On Technology - Broadcom based */ 137 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01), 138 .driver_info = BTUSB_BCM_PATCHRAM }, 139 140 /* Broadcom devices with vendor specific id */ 141 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01), 142 .driver_info = BTUSB_BCM_PATCHRAM }, 143 144 /* ASUSTek Computer - Broadcom based */ 145 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01), 146 .driver_info = BTUSB_BCM_PATCHRAM }, 147 148 /* Belkin F8065bf - Broadcom based */ 149 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01), 150 .driver_info = BTUSB_BCM_PATCHRAM }, 151 152 /* IMC Networks - Broadcom based */ 153 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01), 154 .driver_info = BTUSB_BCM_PATCHRAM }, 155 156 /* Dell Computer - Broadcom based */ 157 { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01), 158 .driver_info = BTUSB_BCM_PATCHRAM }, 159 160 /* Toshiba Corp - Broadcom based */ 161 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01), 162 .driver_info = BTUSB_BCM_PATCHRAM }, 163 164 /* Intel Bluetooth USB Bootloader (RAM module) */ 165 { USB_DEVICE(0x8087, 0x0a5a), 166 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC }, 167 168 { } /* Terminating entry */ 169 }; 170 171 MODULE_DEVICE_TABLE(usb, btusb_table); 172 173 static const struct usb_device_id blacklist_table[] = { 174 /* CSR BlueCore devices */ 175 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 176 177 /* Broadcom BCM2033 without firmware */ 178 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 179 180 /* Broadcom BCM2045 devices */ 181 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 }, 182 183 /* Atheros 3011 with sflash firmware */ 184 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE }, 185 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE }, 186 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE }, 187 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 188 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 189 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE }, 190 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 191 192 /* Atheros AR9285 Malbec with sflash firmware */ 193 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 194 195 /* Atheros 3012 with sflash firmware */ 196 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 }, 197 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 }, 198 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 }, 199 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 }, 200 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 }, 201 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 }, 202 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 }, 203 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 }, 204 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 }, 205 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, 206 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, 207 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 }, 208 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 }, 209 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, 210 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 }, 211 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 }, 212 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 }, 213 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 }, 214 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 }, 215 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 }, 216 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, 217 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 }, 218 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 }, 219 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 }, 220 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 }, 221 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 }, 222 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, 223 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 }, 224 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, 225 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 }, 226 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 }, 227 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 }, 228 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 }, 229 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 }, 230 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 }, 231 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, 232 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 }, 233 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 }, 234 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, 235 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, 236 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 }, 237 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 }, 238 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 }, 239 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 }, 240 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 }, 241 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 }, 242 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 }, 243 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 }, 244 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 }, 245 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 }, 246 247 /* Atheros AR5BBU12 with sflash firmware */ 248 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 249 250 /* Atheros AR5BBU12 with sflash firmware */ 251 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 }, 252 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 }, 253 254 /* QCA ROME chipset */ 255 { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME | 256 BTUSB_WIDEBAND_SPEECH }, 257 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME | 258 BTUSB_WIDEBAND_SPEECH }, 259 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME | 260 BTUSB_WIDEBAND_SPEECH }, 261 { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME | 262 BTUSB_WIDEBAND_SPEECH }, 263 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME | 264 BTUSB_WIDEBAND_SPEECH }, 265 { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME | 266 BTUSB_WIDEBAND_SPEECH }, 267 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME | 268 BTUSB_WIDEBAND_SPEECH }, 269 { USB_DEVICE(0x0cf3, 0xe500), .driver_info = BTUSB_QCA_ROME | 270 BTUSB_WIDEBAND_SPEECH }, 271 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME | 272 BTUSB_WIDEBAND_SPEECH }, 273 { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME | 274 BTUSB_WIDEBAND_SPEECH }, 275 { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME | 276 BTUSB_WIDEBAND_SPEECH }, 277 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME | 278 BTUSB_WIDEBAND_SPEECH }, 279 { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME | 280 BTUSB_WIDEBAND_SPEECH }, 281 { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME | 282 BTUSB_WIDEBAND_SPEECH }, 283 { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME | 284 BTUSB_WIDEBAND_SPEECH }, 285 { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME | 286 BTUSB_WIDEBAND_SPEECH }, 287 { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME | 288 BTUSB_WIDEBAND_SPEECH }, 289 { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME | 290 BTUSB_WIDEBAND_SPEECH }, 291 { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME | 292 BTUSB_WIDEBAND_SPEECH }, 293 294 /* QCA WCN6855 chipset */ 295 { USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 | 296 BTUSB_WIDEBAND_SPEECH | 297 BTUSB_VALID_LE_STATES }, 298 299 /* Broadcom BCM2035 */ 300 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 301 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 302 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 303 304 /* Broadcom BCM2045 */ 305 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 306 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 307 308 /* IBM/Lenovo ThinkPad with Broadcom chip */ 309 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 310 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 311 312 /* HP laptop with Broadcom chip */ 313 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 314 315 /* Dell laptop with Broadcom chip */ 316 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 317 318 /* Dell Wireless 370 and 410 devices */ 319 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 320 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 321 322 /* Belkin F8T012 and F8T013 devices */ 323 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 324 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 325 326 /* Asus WL-BTD202 device */ 327 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 328 329 /* Kensington Bluetooth USB adapter */ 330 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 331 332 /* RTX Telecom based adapters with buggy SCO support */ 333 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 334 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 335 336 /* CONWISE Technology based adapters with buggy SCO support */ 337 { USB_DEVICE(0x0e5e, 0x6622), 338 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622}, 339 340 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */ 341 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE }, 342 343 /* Digianswer devices */ 344 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 345 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 346 347 /* CSR BlueCore Bluetooth Sniffer */ 348 { USB_DEVICE(0x0a12, 0x0002), 349 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 350 351 /* Frontline ComProbe Bluetooth Sniffer */ 352 { USB_DEVICE(0x16d3, 0x0002), 353 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 354 355 /* Marvell Bluetooth devices */ 356 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL }, 357 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL }, 358 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL }, 359 360 /* Intel Bluetooth devices */ 361 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_COMBINED }, 362 { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_COMBINED }, 363 { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_COMBINED }, 364 { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_COMBINED }, 365 { USB_DEVICE(0x8087, 0x0033), .driver_info = BTUSB_INTEL_COMBINED }, 366 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR }, 367 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL_COMBINED | 368 BTUSB_INTEL_BROKEN_INITIAL_NCMD }, 369 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED }, 370 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_COMBINED }, 371 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED }, 372 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_COMBINED }, 373 374 /* Other Intel Bluetooth devices */ 375 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01), 376 .driver_info = BTUSB_IGNORE }, 377 378 /* Realtek 8822CE Bluetooth devices */ 379 { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK | 380 BTUSB_WIDEBAND_SPEECH }, 381 { USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK | 382 BTUSB_WIDEBAND_SPEECH }, 383 384 /* Realtek 8852AE Bluetooth devices */ 385 { USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK | 386 BTUSB_WIDEBAND_SPEECH }, 387 388 /* Realtek Bluetooth devices */ 389 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01), 390 .driver_info = BTUSB_REALTEK }, 391 392 /* MediaTek Bluetooth devices */ 393 { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01), 394 .driver_info = BTUSB_MEDIATEK | 395 BTUSB_WIDEBAND_SPEECH | 396 BTUSB_VALID_LE_STATES }, 397 398 /* Additional MediaTek MT7615E Bluetooth devices */ 399 { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK}, 400 401 /* Additional MediaTek MT7668 Bluetooth devices */ 402 { USB_DEVICE(0x043e, 0x3109), .driver_info = BTUSB_MEDIATEK | 403 BTUSB_WIDEBAND_SPEECH | 404 BTUSB_VALID_LE_STATES }, 405 406 /* Additional MediaTek MT7921 Bluetooth devices */ 407 { USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK | 408 BTUSB_WIDEBAND_SPEECH | 409 BTUSB_VALID_LE_STATES }, 410 { USB_DEVICE(0x13d3, 0x3563), .driver_info = BTUSB_MEDIATEK | 411 BTUSB_WIDEBAND_SPEECH | 412 BTUSB_VALID_LE_STATES }, 413 { USB_DEVICE(0x0489, 0xe0cd), .driver_info = BTUSB_MEDIATEK | 414 BTUSB_WIDEBAND_SPEECH | 415 BTUSB_VALID_LE_STATES }, 416 417 /* Additional Realtek 8723AE Bluetooth devices */ 418 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK }, 419 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK }, 420 421 /* Additional Realtek 8723BE Bluetooth devices */ 422 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK }, 423 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK }, 424 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK }, 425 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK }, 426 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK }, 427 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK }, 428 429 /* Additional Realtek 8723BU Bluetooth devices */ 430 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK }, 431 432 /* Additional Realtek 8723DE Bluetooth devices */ 433 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK }, 434 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK }, 435 436 /* Additional Realtek 8761BU Bluetooth devices */ 437 { USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK | 438 BTUSB_WIDEBAND_SPEECH }, 439 440 /* Additional Realtek 8821AE Bluetooth devices */ 441 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK }, 442 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK }, 443 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK }, 444 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK }, 445 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK }, 446 447 /* Additional Realtek 8822BE Bluetooth devices */ 448 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK }, 449 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK }, 450 451 /* Additional Realtek 8822CE Bluetooth devices */ 452 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK | 453 BTUSB_WIDEBAND_SPEECH }, 454 /* Bluetooth component of Realtek 8852AE device */ 455 { USB_DEVICE(0x04ca, 0x4006), .driver_info = BTUSB_REALTEK | 456 BTUSB_WIDEBAND_SPEECH }, 457 458 { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK | 459 BTUSB_WIDEBAND_SPEECH }, 460 { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK | 461 BTUSB_WIDEBAND_SPEECH }, 462 { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK | 463 BTUSB_WIDEBAND_SPEECH }, 464 { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK | 465 BTUSB_WIDEBAND_SPEECH }, 466 { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK | 467 BTUSB_WIDEBAND_SPEECH }, 468 { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK | 469 BTUSB_WIDEBAND_SPEECH }, 470 { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK | 471 BTUSB_WIDEBAND_SPEECH }, 472 { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK | 473 BTUSB_WIDEBAND_SPEECH }, 474 { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK | 475 BTUSB_WIDEBAND_SPEECH }, 476 { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK | 477 BTUSB_WIDEBAND_SPEECH }, 478 479 /* Silicon Wave based devices */ 480 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE }, 481 482 { } /* Terminating entry */ 483 }; 484 485 /* The Bluetooth USB module build into some devices needs to be reset on resume, 486 * this is a problem with the platform (likely shutting off all power) not with 487 * the module itself. So we use a DMI list to match known broken platforms. 488 */ 489 static const struct dmi_system_id btusb_needs_reset_resume_table[] = { 490 { 491 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */ 492 .matches = { 493 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 494 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"), 495 }, 496 }, 497 { 498 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */ 499 .matches = { 500 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 501 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"), 502 }, 503 }, 504 { 505 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */ 506 .matches = { 507 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 508 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"), 509 }, 510 }, 511 {} 512 }; 513 514 #define BTUSB_MAX_ISOC_FRAMES 10 515 516 #define BTUSB_INTR_RUNNING 0 517 #define BTUSB_BULK_RUNNING 1 518 #define BTUSB_ISOC_RUNNING 2 519 #define BTUSB_SUSPENDING 3 520 #define BTUSB_DID_ISO_RESUME 4 521 #define BTUSB_BOOTLOADER 5 522 #define BTUSB_DOWNLOADING 6 523 #define BTUSB_FIRMWARE_LOADED 7 524 #define BTUSB_FIRMWARE_FAILED 8 525 #define BTUSB_BOOTING 9 526 #define BTUSB_DIAG_RUNNING 10 527 #define BTUSB_OOB_WAKE_ENABLED 11 528 #define BTUSB_HW_RESET_ACTIVE 12 529 #define BTUSB_TX_WAIT_VND_EVT 13 530 #define BTUSB_WAKEUP_AUTOSUSPEND 14 531 #define BTUSB_USE_ALT3_FOR_WBS 15 532 533 struct btusb_data { 534 struct hci_dev *hdev; 535 struct usb_device *udev; 536 struct usb_interface *intf; 537 struct usb_interface *isoc; 538 struct usb_interface *diag; 539 unsigned isoc_ifnum; 540 541 unsigned long flags; 542 543 struct work_struct work; 544 struct work_struct waker; 545 546 struct usb_anchor deferred; 547 struct usb_anchor tx_anchor; 548 int tx_in_flight; 549 spinlock_t txlock; 550 551 struct usb_anchor intr_anchor; 552 struct usb_anchor bulk_anchor; 553 struct usb_anchor isoc_anchor; 554 struct usb_anchor diag_anchor; 555 struct usb_anchor ctrl_anchor; 556 spinlock_t rxlock; 557 558 struct sk_buff *evt_skb; 559 struct sk_buff *acl_skb; 560 struct sk_buff *sco_skb; 561 562 struct usb_endpoint_descriptor *intr_ep; 563 struct usb_endpoint_descriptor *bulk_tx_ep; 564 struct usb_endpoint_descriptor *bulk_rx_ep; 565 struct usb_endpoint_descriptor *isoc_tx_ep; 566 struct usb_endpoint_descriptor *isoc_rx_ep; 567 struct usb_endpoint_descriptor *diag_tx_ep; 568 struct usb_endpoint_descriptor *diag_rx_ep; 569 570 struct gpio_desc *reset_gpio; 571 572 __u8 cmdreq_type; 573 __u8 cmdreq; 574 575 unsigned int sco_num; 576 unsigned int air_mode; 577 bool usb_alt6_packet_flow; 578 int isoc_altsetting; 579 int suspend_count; 580 581 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb); 582 int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb); 583 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count); 584 585 int (*setup_on_usb)(struct hci_dev *hdev); 586 587 int oob_wake_irq; /* irq for out-of-band wake-on-bt */ 588 unsigned cmd_timeout_cnt; 589 }; 590 591 static void btusb_intel_cmd_timeout(struct hci_dev *hdev) 592 { 593 struct btusb_data *data = hci_get_drvdata(hdev); 594 struct gpio_desc *reset_gpio = data->reset_gpio; 595 596 if (++data->cmd_timeout_cnt < 5) 597 return; 598 599 if (!reset_gpio) { 600 bt_dev_err(hdev, "No way to reset. Ignoring and continuing"); 601 return; 602 } 603 604 /* 605 * Toggle the hard reset line if the platform provides one. The reset 606 * is going to yank the device off the USB and then replug. So doing 607 * once is enough. The cleanup is handled correctly on the way out 608 * (standard USB disconnect), and the new device is detected cleanly 609 * and bound to the driver again like it should be. 610 */ 611 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 612 bt_dev_err(hdev, "last reset failed? Not resetting again"); 613 return; 614 } 615 616 bt_dev_err(hdev, "Initiating HW reset via gpio"); 617 gpiod_set_value_cansleep(reset_gpio, 1); 618 msleep(100); 619 gpiod_set_value_cansleep(reset_gpio, 0); 620 } 621 622 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev) 623 { 624 struct btusb_data *data = hci_get_drvdata(hdev); 625 struct gpio_desc *reset_gpio = data->reset_gpio; 626 627 if (++data->cmd_timeout_cnt < 5) 628 return; 629 630 if (!reset_gpio) { 631 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring"); 632 return; 633 } 634 635 /* Toggle the hard reset line. The Realtek device is going to 636 * yank itself off the USB and then replug. The cleanup is handled 637 * correctly on the way out (standard USB disconnect), and the new 638 * device is detected cleanly and bound to the driver again like 639 * it should be. 640 */ 641 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 642 bt_dev_err(hdev, "last reset failed? Not resetting again"); 643 return; 644 } 645 646 bt_dev_err(hdev, "Reset Realtek device via gpio"); 647 gpiod_set_value_cansleep(reset_gpio, 1); 648 msleep(200); 649 gpiod_set_value_cansleep(reset_gpio, 0); 650 } 651 652 static void btusb_qca_cmd_timeout(struct hci_dev *hdev) 653 { 654 struct btusb_data *data = hci_get_drvdata(hdev); 655 int err; 656 657 if (++data->cmd_timeout_cnt < 5) 658 return; 659 660 bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device."); 661 /* This is not an unbalanced PM reference since the device will reset */ 662 err = usb_autopm_get_interface(data->intf); 663 if (!err) 664 usb_queue_reset_device(data->intf); 665 else 666 bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err); 667 } 668 669 static inline void btusb_free_frags(struct btusb_data *data) 670 { 671 unsigned long flags; 672 673 spin_lock_irqsave(&data->rxlock, flags); 674 675 kfree_skb(data->evt_skb); 676 data->evt_skb = NULL; 677 678 kfree_skb(data->acl_skb); 679 data->acl_skb = NULL; 680 681 kfree_skb(data->sco_skb); 682 data->sco_skb = NULL; 683 684 spin_unlock_irqrestore(&data->rxlock, flags); 685 } 686 687 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count) 688 { 689 struct sk_buff *skb; 690 unsigned long flags; 691 int err = 0; 692 693 spin_lock_irqsave(&data->rxlock, flags); 694 skb = data->evt_skb; 695 696 while (count) { 697 int len; 698 699 if (!skb) { 700 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC); 701 if (!skb) { 702 err = -ENOMEM; 703 break; 704 } 705 706 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 707 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE; 708 } 709 710 len = min_t(uint, hci_skb_expect(skb), count); 711 skb_put_data(skb, buffer, len); 712 713 count -= len; 714 buffer += len; 715 hci_skb_expect(skb) -= len; 716 717 if (skb->len == HCI_EVENT_HDR_SIZE) { 718 /* Complete event header */ 719 hci_skb_expect(skb) = hci_event_hdr(skb)->plen; 720 721 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 722 kfree_skb(skb); 723 skb = NULL; 724 725 err = -EILSEQ; 726 break; 727 } 728 } 729 730 if (!hci_skb_expect(skb)) { 731 /* Complete frame */ 732 data->recv_event(data->hdev, skb); 733 skb = NULL; 734 } 735 } 736 737 data->evt_skb = skb; 738 spin_unlock_irqrestore(&data->rxlock, flags); 739 740 return err; 741 } 742 743 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count) 744 { 745 struct sk_buff *skb; 746 unsigned long flags; 747 int err = 0; 748 749 spin_lock_irqsave(&data->rxlock, flags); 750 skb = data->acl_skb; 751 752 while (count) { 753 int len; 754 755 if (!skb) { 756 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); 757 if (!skb) { 758 err = -ENOMEM; 759 break; 760 } 761 762 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; 763 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE; 764 } 765 766 len = min_t(uint, hci_skb_expect(skb), count); 767 skb_put_data(skb, buffer, len); 768 769 count -= len; 770 buffer += len; 771 hci_skb_expect(skb) -= len; 772 773 if (skb->len == HCI_ACL_HDR_SIZE) { 774 __le16 dlen = hci_acl_hdr(skb)->dlen; 775 776 /* Complete ACL header */ 777 hci_skb_expect(skb) = __le16_to_cpu(dlen); 778 779 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 780 kfree_skb(skb); 781 skb = NULL; 782 783 err = -EILSEQ; 784 break; 785 } 786 } 787 788 if (!hci_skb_expect(skb)) { 789 /* Complete frame */ 790 data->recv_acl(data->hdev, skb); 791 skb = NULL; 792 } 793 } 794 795 data->acl_skb = skb; 796 spin_unlock_irqrestore(&data->rxlock, flags); 797 798 return err; 799 } 800 801 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count) 802 { 803 struct sk_buff *skb; 804 unsigned long flags; 805 int err = 0; 806 807 spin_lock_irqsave(&data->rxlock, flags); 808 skb = data->sco_skb; 809 810 while (count) { 811 int len; 812 813 if (!skb) { 814 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC); 815 if (!skb) { 816 err = -ENOMEM; 817 break; 818 } 819 820 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT; 821 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE; 822 } 823 824 len = min_t(uint, hci_skb_expect(skb), count); 825 skb_put_data(skb, buffer, len); 826 827 count -= len; 828 buffer += len; 829 hci_skb_expect(skb) -= len; 830 831 if (skb->len == HCI_SCO_HDR_SIZE) { 832 /* Complete SCO header */ 833 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen; 834 835 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 836 kfree_skb(skb); 837 skb = NULL; 838 839 err = -EILSEQ; 840 break; 841 } 842 } 843 844 if (!hci_skb_expect(skb)) { 845 /* Complete frame */ 846 hci_recv_frame(data->hdev, skb); 847 skb = NULL; 848 } 849 } 850 851 data->sco_skb = skb; 852 spin_unlock_irqrestore(&data->rxlock, flags); 853 854 return err; 855 } 856 857 static void btusb_intr_complete(struct urb *urb) 858 { 859 struct hci_dev *hdev = urb->context; 860 struct btusb_data *data = hci_get_drvdata(hdev); 861 int err; 862 863 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 864 urb->actual_length); 865 866 if (!test_bit(HCI_RUNNING, &hdev->flags)) 867 return; 868 869 if (urb->status == 0) { 870 hdev->stat.byte_rx += urb->actual_length; 871 872 if (btusb_recv_intr(data, urb->transfer_buffer, 873 urb->actual_length) < 0) { 874 bt_dev_err(hdev, "corrupted event packet"); 875 hdev->stat.err_rx++; 876 } 877 } else if (urb->status == -ENOENT) { 878 /* Avoid suspend failed when usb_kill_urb */ 879 return; 880 } 881 882 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 883 return; 884 885 usb_mark_last_busy(data->udev); 886 usb_anchor_urb(urb, &data->intr_anchor); 887 888 err = usb_submit_urb(urb, GFP_ATOMIC); 889 if (err < 0) { 890 /* -EPERM: urb is being killed; 891 * -ENODEV: device got disconnected 892 */ 893 if (err != -EPERM && err != -ENODEV) 894 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 895 urb, -err); 896 usb_unanchor_urb(urb); 897 } 898 } 899 900 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 901 { 902 struct btusb_data *data = hci_get_drvdata(hdev); 903 struct urb *urb; 904 unsigned char *buf; 905 unsigned int pipe; 906 int err, size; 907 908 BT_DBG("%s", hdev->name); 909 910 if (!data->intr_ep) 911 return -ENODEV; 912 913 urb = usb_alloc_urb(0, mem_flags); 914 if (!urb) 915 return -ENOMEM; 916 917 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 918 919 buf = kmalloc(size, mem_flags); 920 if (!buf) { 921 usb_free_urb(urb); 922 return -ENOMEM; 923 } 924 925 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 926 927 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 928 btusb_intr_complete, hdev, data->intr_ep->bInterval); 929 930 urb->transfer_flags |= URB_FREE_BUFFER; 931 932 usb_anchor_urb(urb, &data->intr_anchor); 933 934 err = usb_submit_urb(urb, mem_flags); 935 if (err < 0) { 936 if (err != -EPERM && err != -ENODEV) 937 bt_dev_err(hdev, "urb %p submission failed (%d)", 938 urb, -err); 939 usb_unanchor_urb(urb); 940 } 941 942 usb_free_urb(urb); 943 944 return err; 945 } 946 947 static void btusb_bulk_complete(struct urb *urb) 948 { 949 struct hci_dev *hdev = urb->context; 950 struct btusb_data *data = hci_get_drvdata(hdev); 951 int err; 952 953 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 954 urb->actual_length); 955 956 if (!test_bit(HCI_RUNNING, &hdev->flags)) 957 return; 958 959 if (urb->status == 0) { 960 hdev->stat.byte_rx += urb->actual_length; 961 962 if (data->recv_bulk(data, urb->transfer_buffer, 963 urb->actual_length) < 0) { 964 bt_dev_err(hdev, "corrupted ACL packet"); 965 hdev->stat.err_rx++; 966 } 967 } else if (urb->status == -ENOENT) { 968 /* Avoid suspend failed when usb_kill_urb */ 969 return; 970 } 971 972 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 973 return; 974 975 usb_anchor_urb(urb, &data->bulk_anchor); 976 usb_mark_last_busy(data->udev); 977 978 err = usb_submit_urb(urb, GFP_ATOMIC); 979 if (err < 0) { 980 /* -EPERM: urb is being killed; 981 * -ENODEV: device got disconnected 982 */ 983 if (err != -EPERM && err != -ENODEV) 984 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 985 urb, -err); 986 usb_unanchor_urb(urb); 987 } 988 } 989 990 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 991 { 992 struct btusb_data *data = hci_get_drvdata(hdev); 993 struct urb *urb; 994 unsigned char *buf; 995 unsigned int pipe; 996 int err, size = HCI_MAX_FRAME_SIZE; 997 998 BT_DBG("%s", hdev->name); 999 1000 if (!data->bulk_rx_ep) 1001 return -ENODEV; 1002 1003 urb = usb_alloc_urb(0, mem_flags); 1004 if (!urb) 1005 return -ENOMEM; 1006 1007 buf = kmalloc(size, mem_flags); 1008 if (!buf) { 1009 usb_free_urb(urb); 1010 return -ENOMEM; 1011 } 1012 1013 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 1014 1015 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 1016 btusb_bulk_complete, hdev); 1017 1018 urb->transfer_flags |= URB_FREE_BUFFER; 1019 1020 usb_mark_last_busy(data->udev); 1021 usb_anchor_urb(urb, &data->bulk_anchor); 1022 1023 err = usb_submit_urb(urb, mem_flags); 1024 if (err < 0) { 1025 if (err != -EPERM && err != -ENODEV) 1026 bt_dev_err(hdev, "urb %p submission failed (%d)", 1027 urb, -err); 1028 usb_unanchor_urb(urb); 1029 } 1030 1031 usb_free_urb(urb); 1032 1033 return err; 1034 } 1035 1036 static void btusb_isoc_complete(struct urb *urb) 1037 { 1038 struct hci_dev *hdev = urb->context; 1039 struct btusb_data *data = hci_get_drvdata(hdev); 1040 int i, err; 1041 1042 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1043 urb->actual_length); 1044 1045 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1046 return; 1047 1048 if (urb->status == 0) { 1049 for (i = 0; i < urb->number_of_packets; i++) { 1050 unsigned int offset = urb->iso_frame_desc[i].offset; 1051 unsigned int length = urb->iso_frame_desc[i].actual_length; 1052 1053 if (urb->iso_frame_desc[i].status) 1054 continue; 1055 1056 hdev->stat.byte_rx += length; 1057 1058 if (btusb_recv_isoc(data, urb->transfer_buffer + offset, 1059 length) < 0) { 1060 bt_dev_err(hdev, "corrupted SCO packet"); 1061 hdev->stat.err_rx++; 1062 } 1063 } 1064 } else if (urb->status == -ENOENT) { 1065 /* Avoid suspend failed when usb_kill_urb */ 1066 return; 1067 } 1068 1069 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 1070 return; 1071 1072 usb_anchor_urb(urb, &data->isoc_anchor); 1073 1074 err = usb_submit_urb(urb, GFP_ATOMIC); 1075 if (err < 0) { 1076 /* -EPERM: urb is being killed; 1077 * -ENODEV: device got disconnected 1078 */ 1079 if (err != -EPERM && err != -ENODEV) 1080 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1081 urb, -err); 1082 usb_unanchor_urb(urb); 1083 } 1084 } 1085 1086 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len, 1087 int mtu, struct btusb_data *data) 1088 { 1089 int i, offset = 0; 1090 unsigned int interval; 1091 1092 BT_DBG("len %d mtu %d", len, mtu); 1093 1094 /* For mSBC ALT 6 setting the host will send the packet at continuous 1095 * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting 1096 * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets. 1097 * To maintain the rate we send 63bytes of usb packets alternatively for 1098 * 7ms and 8ms to maintain the rate as 7.5ms. 1099 */ 1100 if (data->usb_alt6_packet_flow) { 1101 interval = 7; 1102 data->usb_alt6_packet_flow = false; 1103 } else { 1104 interval = 6; 1105 data->usb_alt6_packet_flow = true; 1106 } 1107 1108 for (i = 0; i < interval; i++) { 1109 urb->iso_frame_desc[i].offset = offset; 1110 urb->iso_frame_desc[i].length = offset; 1111 } 1112 1113 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 1114 urb->iso_frame_desc[i].offset = offset; 1115 urb->iso_frame_desc[i].length = len; 1116 i++; 1117 } 1118 1119 urb->number_of_packets = i; 1120 } 1121 1122 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 1123 { 1124 int i, offset = 0; 1125 1126 BT_DBG("len %d mtu %d", len, mtu); 1127 1128 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 1129 i++, offset += mtu, len -= mtu) { 1130 urb->iso_frame_desc[i].offset = offset; 1131 urb->iso_frame_desc[i].length = mtu; 1132 } 1133 1134 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 1135 urb->iso_frame_desc[i].offset = offset; 1136 urb->iso_frame_desc[i].length = len; 1137 i++; 1138 } 1139 1140 urb->number_of_packets = i; 1141 } 1142 1143 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 1144 { 1145 struct btusb_data *data = hci_get_drvdata(hdev); 1146 struct urb *urb; 1147 unsigned char *buf; 1148 unsigned int pipe; 1149 int err, size; 1150 1151 BT_DBG("%s", hdev->name); 1152 1153 if (!data->isoc_rx_ep) 1154 return -ENODEV; 1155 1156 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 1157 if (!urb) 1158 return -ENOMEM; 1159 1160 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 1161 BTUSB_MAX_ISOC_FRAMES; 1162 1163 buf = kmalloc(size, mem_flags); 1164 if (!buf) { 1165 usb_free_urb(urb); 1166 return -ENOMEM; 1167 } 1168 1169 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 1170 1171 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 1172 hdev, data->isoc_rx_ep->bInterval); 1173 1174 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 1175 1176 __fill_isoc_descriptor(urb, size, 1177 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 1178 1179 usb_anchor_urb(urb, &data->isoc_anchor); 1180 1181 err = usb_submit_urb(urb, mem_flags); 1182 if (err < 0) { 1183 if (err != -EPERM && err != -ENODEV) 1184 bt_dev_err(hdev, "urb %p submission failed (%d)", 1185 urb, -err); 1186 usb_unanchor_urb(urb); 1187 } 1188 1189 usb_free_urb(urb); 1190 1191 return err; 1192 } 1193 1194 static void btusb_diag_complete(struct urb *urb) 1195 { 1196 struct hci_dev *hdev = urb->context; 1197 struct btusb_data *data = hci_get_drvdata(hdev); 1198 int err; 1199 1200 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1201 urb->actual_length); 1202 1203 if (urb->status == 0) { 1204 struct sk_buff *skb; 1205 1206 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC); 1207 if (skb) { 1208 skb_put_data(skb, urb->transfer_buffer, 1209 urb->actual_length); 1210 hci_recv_diag(hdev, skb); 1211 } 1212 } else if (urb->status == -ENOENT) { 1213 /* Avoid suspend failed when usb_kill_urb */ 1214 return; 1215 } 1216 1217 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags)) 1218 return; 1219 1220 usb_anchor_urb(urb, &data->diag_anchor); 1221 usb_mark_last_busy(data->udev); 1222 1223 err = usb_submit_urb(urb, GFP_ATOMIC); 1224 if (err < 0) { 1225 /* -EPERM: urb is being killed; 1226 * -ENODEV: device got disconnected 1227 */ 1228 if (err != -EPERM && err != -ENODEV) 1229 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1230 urb, -err); 1231 usb_unanchor_urb(urb); 1232 } 1233 } 1234 1235 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags) 1236 { 1237 struct btusb_data *data = hci_get_drvdata(hdev); 1238 struct urb *urb; 1239 unsigned char *buf; 1240 unsigned int pipe; 1241 int err, size = HCI_MAX_FRAME_SIZE; 1242 1243 BT_DBG("%s", hdev->name); 1244 1245 if (!data->diag_rx_ep) 1246 return -ENODEV; 1247 1248 urb = usb_alloc_urb(0, mem_flags); 1249 if (!urb) 1250 return -ENOMEM; 1251 1252 buf = kmalloc(size, mem_flags); 1253 if (!buf) { 1254 usb_free_urb(urb); 1255 return -ENOMEM; 1256 } 1257 1258 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress); 1259 1260 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 1261 btusb_diag_complete, hdev); 1262 1263 urb->transfer_flags |= URB_FREE_BUFFER; 1264 1265 usb_mark_last_busy(data->udev); 1266 usb_anchor_urb(urb, &data->diag_anchor); 1267 1268 err = usb_submit_urb(urb, mem_flags); 1269 if (err < 0) { 1270 if (err != -EPERM && err != -ENODEV) 1271 bt_dev_err(hdev, "urb %p submission failed (%d)", 1272 urb, -err); 1273 usb_unanchor_urb(urb); 1274 } 1275 1276 usb_free_urb(urb); 1277 1278 return err; 1279 } 1280 1281 static void btusb_tx_complete(struct urb *urb) 1282 { 1283 struct sk_buff *skb = urb->context; 1284 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 1285 struct btusb_data *data = hci_get_drvdata(hdev); 1286 unsigned long flags; 1287 1288 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1289 urb->actual_length); 1290 1291 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1292 goto done; 1293 1294 if (!urb->status) 1295 hdev->stat.byte_tx += urb->transfer_buffer_length; 1296 else 1297 hdev->stat.err_tx++; 1298 1299 done: 1300 spin_lock_irqsave(&data->txlock, flags); 1301 data->tx_in_flight--; 1302 spin_unlock_irqrestore(&data->txlock, flags); 1303 1304 kfree(urb->setup_packet); 1305 1306 kfree_skb(skb); 1307 } 1308 1309 static void btusb_isoc_tx_complete(struct urb *urb) 1310 { 1311 struct sk_buff *skb = urb->context; 1312 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 1313 1314 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1315 urb->actual_length); 1316 1317 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1318 goto done; 1319 1320 if (!urb->status) 1321 hdev->stat.byte_tx += urb->transfer_buffer_length; 1322 else 1323 hdev->stat.err_tx++; 1324 1325 done: 1326 kfree(urb->setup_packet); 1327 1328 kfree_skb(skb); 1329 } 1330 1331 static int btusb_open(struct hci_dev *hdev) 1332 { 1333 struct btusb_data *data = hci_get_drvdata(hdev); 1334 int err; 1335 1336 BT_DBG("%s", hdev->name); 1337 1338 err = usb_autopm_get_interface(data->intf); 1339 if (err < 0) 1340 return err; 1341 1342 /* Patching USB firmware files prior to starting any URBs of HCI path 1343 * It is more safe to use USB bulk channel for downloading USB patch 1344 */ 1345 if (data->setup_on_usb) { 1346 err = data->setup_on_usb(hdev); 1347 if (err < 0) 1348 goto setup_fail; 1349 } 1350 1351 data->intf->needs_remote_wakeup = 1; 1352 1353 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 1354 goto done; 1355 1356 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 1357 if (err < 0) 1358 goto failed; 1359 1360 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 1361 if (err < 0) { 1362 usb_kill_anchored_urbs(&data->intr_anchor); 1363 goto failed; 1364 } 1365 1366 set_bit(BTUSB_BULK_RUNNING, &data->flags); 1367 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 1368 1369 if (data->diag) { 1370 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL)) 1371 set_bit(BTUSB_DIAG_RUNNING, &data->flags); 1372 } 1373 1374 done: 1375 usb_autopm_put_interface(data->intf); 1376 return 0; 1377 1378 failed: 1379 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1380 setup_fail: 1381 usb_autopm_put_interface(data->intf); 1382 return err; 1383 } 1384 1385 static void btusb_stop_traffic(struct btusb_data *data) 1386 { 1387 usb_kill_anchored_urbs(&data->intr_anchor); 1388 usb_kill_anchored_urbs(&data->bulk_anchor); 1389 usb_kill_anchored_urbs(&data->isoc_anchor); 1390 usb_kill_anchored_urbs(&data->diag_anchor); 1391 usb_kill_anchored_urbs(&data->ctrl_anchor); 1392 } 1393 1394 static int btusb_close(struct hci_dev *hdev) 1395 { 1396 struct btusb_data *data = hci_get_drvdata(hdev); 1397 int err; 1398 1399 BT_DBG("%s", hdev->name); 1400 1401 cancel_work_sync(&data->work); 1402 cancel_work_sync(&data->waker); 1403 1404 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1405 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1406 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1407 clear_bit(BTUSB_DIAG_RUNNING, &data->flags); 1408 1409 btusb_stop_traffic(data); 1410 btusb_free_frags(data); 1411 1412 err = usb_autopm_get_interface(data->intf); 1413 if (err < 0) 1414 goto failed; 1415 1416 data->intf->needs_remote_wakeup = 0; 1417 1418 /* Enable remote wake up for auto-suspend */ 1419 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) 1420 data->intf->needs_remote_wakeup = 1; 1421 1422 usb_autopm_put_interface(data->intf); 1423 1424 failed: 1425 usb_scuttle_anchored_urbs(&data->deferred); 1426 return 0; 1427 } 1428 1429 static int btusb_flush(struct hci_dev *hdev) 1430 { 1431 struct btusb_data *data = hci_get_drvdata(hdev); 1432 1433 BT_DBG("%s", hdev->name); 1434 1435 usb_kill_anchored_urbs(&data->tx_anchor); 1436 btusb_free_frags(data); 1437 1438 return 0; 1439 } 1440 1441 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb) 1442 { 1443 struct btusb_data *data = hci_get_drvdata(hdev); 1444 struct usb_ctrlrequest *dr; 1445 struct urb *urb; 1446 unsigned int pipe; 1447 1448 urb = usb_alloc_urb(0, GFP_KERNEL); 1449 if (!urb) 1450 return ERR_PTR(-ENOMEM); 1451 1452 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 1453 if (!dr) { 1454 usb_free_urb(urb); 1455 return ERR_PTR(-ENOMEM); 1456 } 1457 1458 dr->bRequestType = data->cmdreq_type; 1459 dr->bRequest = data->cmdreq; 1460 dr->wIndex = 0; 1461 dr->wValue = 0; 1462 dr->wLength = __cpu_to_le16(skb->len); 1463 1464 pipe = usb_sndctrlpipe(data->udev, 0x00); 1465 1466 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 1467 skb->data, skb->len, btusb_tx_complete, skb); 1468 1469 skb->dev = (void *)hdev; 1470 1471 return urb; 1472 } 1473 1474 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb) 1475 { 1476 struct btusb_data *data = hci_get_drvdata(hdev); 1477 struct urb *urb; 1478 unsigned int pipe; 1479 1480 if (!data->bulk_tx_ep) 1481 return ERR_PTR(-ENODEV); 1482 1483 urb = usb_alloc_urb(0, GFP_KERNEL); 1484 if (!urb) 1485 return ERR_PTR(-ENOMEM); 1486 1487 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress); 1488 1489 usb_fill_bulk_urb(urb, data->udev, pipe, 1490 skb->data, skb->len, btusb_tx_complete, skb); 1491 1492 skb->dev = (void *)hdev; 1493 1494 return urb; 1495 } 1496 1497 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb) 1498 { 1499 struct btusb_data *data = hci_get_drvdata(hdev); 1500 struct urb *urb; 1501 unsigned int pipe; 1502 1503 if (!data->isoc_tx_ep) 1504 return ERR_PTR(-ENODEV); 1505 1506 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL); 1507 if (!urb) 1508 return ERR_PTR(-ENOMEM); 1509 1510 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress); 1511 1512 usb_fill_int_urb(urb, data->udev, pipe, 1513 skb->data, skb->len, btusb_isoc_tx_complete, 1514 skb, data->isoc_tx_ep->bInterval); 1515 1516 urb->transfer_flags = URB_ISO_ASAP; 1517 1518 if (data->isoc_altsetting == 6) 1519 __fill_isoc_descriptor_msbc(urb, skb->len, 1520 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize), 1521 data); 1522 else 1523 __fill_isoc_descriptor(urb, skb->len, 1524 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 1525 skb->dev = (void *)hdev; 1526 1527 return urb; 1528 } 1529 1530 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb) 1531 { 1532 struct btusb_data *data = hci_get_drvdata(hdev); 1533 int err; 1534 1535 usb_anchor_urb(urb, &data->tx_anchor); 1536 1537 err = usb_submit_urb(urb, GFP_KERNEL); 1538 if (err < 0) { 1539 if (err != -EPERM && err != -ENODEV) 1540 bt_dev_err(hdev, "urb %p submission failed (%d)", 1541 urb, -err); 1542 kfree(urb->setup_packet); 1543 usb_unanchor_urb(urb); 1544 } else { 1545 usb_mark_last_busy(data->udev); 1546 } 1547 1548 usb_free_urb(urb); 1549 return err; 1550 } 1551 1552 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb) 1553 { 1554 struct btusb_data *data = hci_get_drvdata(hdev); 1555 unsigned long flags; 1556 bool suspending; 1557 1558 spin_lock_irqsave(&data->txlock, flags); 1559 suspending = test_bit(BTUSB_SUSPENDING, &data->flags); 1560 if (!suspending) 1561 data->tx_in_flight++; 1562 spin_unlock_irqrestore(&data->txlock, flags); 1563 1564 if (!suspending) 1565 return submit_tx_urb(hdev, urb); 1566 1567 usb_anchor_urb(urb, &data->deferred); 1568 schedule_work(&data->waker); 1569 1570 usb_free_urb(urb); 1571 return 0; 1572 } 1573 1574 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 1575 { 1576 struct urb *urb; 1577 1578 BT_DBG("%s", hdev->name); 1579 1580 switch (hci_skb_pkt_type(skb)) { 1581 case HCI_COMMAND_PKT: 1582 urb = alloc_ctrl_urb(hdev, skb); 1583 if (IS_ERR(urb)) 1584 return PTR_ERR(urb); 1585 1586 hdev->stat.cmd_tx++; 1587 return submit_or_queue_tx_urb(hdev, urb); 1588 1589 case HCI_ACLDATA_PKT: 1590 urb = alloc_bulk_urb(hdev, skb); 1591 if (IS_ERR(urb)) 1592 return PTR_ERR(urb); 1593 1594 hdev->stat.acl_tx++; 1595 return submit_or_queue_tx_urb(hdev, urb); 1596 1597 case HCI_SCODATA_PKT: 1598 if (hci_conn_num(hdev, SCO_LINK) < 1) 1599 return -ENODEV; 1600 1601 urb = alloc_isoc_urb(hdev, skb); 1602 if (IS_ERR(urb)) 1603 return PTR_ERR(urb); 1604 1605 hdev->stat.sco_tx++; 1606 return submit_tx_urb(hdev, urb); 1607 } 1608 1609 return -EILSEQ; 1610 } 1611 1612 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 1613 { 1614 struct btusb_data *data = hci_get_drvdata(hdev); 1615 1616 BT_DBG("%s evt %d", hdev->name, evt); 1617 1618 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) { 1619 data->sco_num = hci_conn_num(hdev, SCO_LINK); 1620 data->air_mode = evt; 1621 schedule_work(&data->work); 1622 } 1623 } 1624 1625 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 1626 { 1627 struct btusb_data *data = hci_get_drvdata(hdev); 1628 struct usb_interface *intf = data->isoc; 1629 struct usb_endpoint_descriptor *ep_desc; 1630 int i, err; 1631 1632 if (!data->isoc) 1633 return -ENODEV; 1634 1635 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting); 1636 if (err < 0) { 1637 bt_dev_err(hdev, "setting interface failed (%d)", -err); 1638 return err; 1639 } 1640 1641 data->isoc_altsetting = altsetting; 1642 1643 data->isoc_tx_ep = NULL; 1644 data->isoc_rx_ep = NULL; 1645 1646 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 1647 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 1648 1649 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 1650 data->isoc_tx_ep = ep_desc; 1651 continue; 1652 } 1653 1654 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 1655 data->isoc_rx_ep = ep_desc; 1656 continue; 1657 } 1658 } 1659 1660 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 1661 bt_dev_err(hdev, "invalid SCO descriptors"); 1662 return -ENODEV; 1663 } 1664 1665 return 0; 1666 } 1667 1668 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts) 1669 { 1670 struct btusb_data *data = hci_get_drvdata(hdev); 1671 int err; 1672 1673 if (data->isoc_altsetting != new_alts) { 1674 unsigned long flags; 1675 1676 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1677 usb_kill_anchored_urbs(&data->isoc_anchor); 1678 1679 /* When isochronous alternate setting needs to be 1680 * changed, because SCO connection has been added 1681 * or removed, a packet fragment may be left in the 1682 * reassembling state. This could lead to wrongly 1683 * assembled fragments. 1684 * 1685 * Clear outstanding fragment when selecting a new 1686 * alternate setting. 1687 */ 1688 spin_lock_irqsave(&data->rxlock, flags); 1689 kfree_skb(data->sco_skb); 1690 data->sco_skb = NULL; 1691 spin_unlock_irqrestore(&data->rxlock, flags); 1692 1693 err = __set_isoc_interface(hdev, new_alts); 1694 if (err < 0) 1695 return err; 1696 } 1697 1698 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1699 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 1700 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1701 else 1702 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 1703 } 1704 1705 return 0; 1706 } 1707 1708 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data, 1709 int alt) 1710 { 1711 struct usb_interface *intf = data->isoc; 1712 int i; 1713 1714 BT_DBG("Looking for Alt no :%d", alt); 1715 1716 if (!intf) 1717 return NULL; 1718 1719 for (i = 0; i < intf->num_altsetting; i++) { 1720 if (intf->altsetting[i].desc.bAlternateSetting == alt) 1721 return &intf->altsetting[i]; 1722 } 1723 1724 return NULL; 1725 } 1726 1727 static void btusb_work(struct work_struct *work) 1728 { 1729 struct btusb_data *data = container_of(work, struct btusb_data, work); 1730 struct hci_dev *hdev = data->hdev; 1731 int new_alts = 0; 1732 int err; 1733 1734 if (data->sco_num > 0) { 1735 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 1736 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 1737 if (err < 0) { 1738 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1739 usb_kill_anchored_urbs(&data->isoc_anchor); 1740 return; 1741 } 1742 1743 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 1744 } 1745 1746 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) { 1747 if (hdev->voice_setting & 0x0020) { 1748 static const int alts[3] = { 2, 4, 5 }; 1749 1750 new_alts = alts[data->sco_num - 1]; 1751 } else { 1752 new_alts = data->sco_num; 1753 } 1754 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) { 1755 /* Bluetooth USB spec recommends alt 6 (63 bytes), but 1756 * many adapters do not support it. Alt 1 appears to 1757 * work for all adapters that do not have alt 6, and 1758 * which work with WBS at all. Some devices prefer 1759 * alt 3 (HCI payload >= 60 Bytes let air packet 1760 * data satisfy 60 bytes), requiring 1761 * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72 1762 * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1. 1763 */ 1764 if (btusb_find_altsetting(data, 6)) 1765 new_alts = 6; 1766 else if (btusb_find_altsetting(data, 3) && 1767 hdev->sco_mtu >= 72 && 1768 test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags)) 1769 new_alts = 3; 1770 else 1771 new_alts = 1; 1772 } 1773 1774 if (btusb_switch_alt_setting(hdev, new_alts) < 0) 1775 bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts); 1776 } else { 1777 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1778 usb_kill_anchored_urbs(&data->isoc_anchor); 1779 1780 __set_isoc_interface(hdev, 0); 1781 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 1782 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 1783 } 1784 } 1785 1786 static void btusb_waker(struct work_struct *work) 1787 { 1788 struct btusb_data *data = container_of(work, struct btusb_data, waker); 1789 int err; 1790 1791 err = usb_autopm_get_interface(data->intf); 1792 if (err < 0) 1793 return; 1794 1795 usb_autopm_put_interface(data->intf); 1796 } 1797 1798 static int btusb_setup_bcm92035(struct hci_dev *hdev) 1799 { 1800 struct sk_buff *skb; 1801 u8 val = 0x00; 1802 1803 BT_DBG("%s", hdev->name); 1804 1805 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT); 1806 if (IS_ERR(skb)) 1807 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb)); 1808 else 1809 kfree_skb(skb); 1810 1811 return 0; 1812 } 1813 1814 static int btusb_setup_csr(struct hci_dev *hdev) 1815 { 1816 struct btusb_data *data = hci_get_drvdata(hdev); 1817 u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice); 1818 struct hci_rp_read_local_version *rp; 1819 struct sk_buff *skb; 1820 bool is_fake = false; 1821 int ret; 1822 1823 BT_DBG("%s", hdev->name); 1824 1825 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 1826 HCI_INIT_TIMEOUT); 1827 if (IS_ERR(skb)) { 1828 int err = PTR_ERR(skb); 1829 bt_dev_err(hdev, "CSR: Local version failed (%d)", err); 1830 return err; 1831 } 1832 1833 if (skb->len != sizeof(struct hci_rp_read_local_version)) { 1834 bt_dev_err(hdev, "CSR: Local version length mismatch"); 1835 kfree_skb(skb); 1836 return -EIO; 1837 } 1838 1839 rp = (struct hci_rp_read_local_version *)skb->data; 1840 1841 /* Detect a wide host of Chinese controllers that aren't CSR. 1842 * 1843 * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891 1844 * 1845 * The main thing they have in common is that these are really popular low-cost 1846 * options that support newer Bluetooth versions but rely on heavy VID/PID 1847 * squatting of this poor old Bluetooth 1.1 device. Even sold as such. 1848 * 1849 * We detect actual CSR devices by checking that the HCI manufacturer code 1850 * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and 1851 * HCI rev values always match. As they both store the firmware number. 1852 */ 1853 if (le16_to_cpu(rp->manufacturer) != 10 || 1854 le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver)) 1855 is_fake = true; 1856 1857 /* Known legit CSR firmware build numbers and their supported BT versions: 1858 * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e 1859 * - 1.2 (0x2) -> 0x04d9, 0x0529 1860 * - 2.0 (0x3) -> 0x07a6, 0x07ad, 0x0c5c 1861 * - 2.1 (0x4) -> 0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External) 1862 * - 4.0 (0x6) -> 0x1d86, 0x2031, 0x22bb 1863 * 1864 * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that 1865 * support BT 1.1 only; so it's a dead giveaway when some 1866 * third-party BT 4.0 dongle reuses it. 1867 */ 1868 else if (le16_to_cpu(rp->lmp_subver) <= 0x034e && 1869 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1) 1870 is_fake = true; 1871 1872 else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 && 1873 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2) 1874 is_fake = true; 1875 1876 else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c && 1877 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0) 1878 is_fake = true; 1879 1880 else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 && 1881 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1) 1882 is_fake = true; 1883 1884 else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb && 1885 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0) 1886 is_fake = true; 1887 1888 /* Other clones which beat all the above checks */ 1889 else if (bcdDevice == 0x0134 && 1890 le16_to_cpu(rp->lmp_subver) == 0x0c5c && 1891 le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_2_0) 1892 is_fake = true; 1893 1894 if (is_fake) { 1895 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once..."); 1896 1897 /* Generally these clones have big discrepancies between 1898 * advertised features and what's actually supported. 1899 * Probably will need to be expanded in the future; 1900 * without these the controller will lock up. 1901 */ 1902 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 1903 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks); 1904 1905 /* Clear the reset quirk since this is not an actual 1906 * early Bluetooth 1.1 device from CSR. 1907 */ 1908 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1909 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 1910 1911 /* 1912 * Special workaround for these BT 4.0 chip clones, and potentially more: 1913 * 1914 * - 0x0134: a Barrot 8041a02 (HCI rev: 0x1012 sub: 0x0810) 1915 * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709) 1916 * 1917 * These controllers are really messed-up. 1918 * 1919 * 1. Their bulk RX endpoint will never report any data unless 1920 * the device was suspended at least once (yes, really). 1921 * 2. They will not wakeup when autosuspended and receiving data 1922 * on their bulk RX endpoint from e.g. a keyboard or mouse 1923 * (IOW remote-wakeup support is broken for the bulk endpoint). 1924 * 1925 * To fix 1. enable runtime-suspend, force-suspend the 1926 * HCI and then wake-it up by disabling runtime-suspend. 1927 * 1928 * To fix 2. clear the HCI's can_wake flag, this way the HCI 1929 * will still be autosuspended when it is not open. 1930 * 1931 * -- 1932 * 1933 * Because these are widespread problems we prefer generic solutions; so 1934 * apply this initialization quirk to every controller that gets here, 1935 * it should be harmless. The alternative is to not work at all. 1936 */ 1937 pm_runtime_allow(&data->udev->dev); 1938 1939 ret = pm_runtime_suspend(&data->udev->dev); 1940 if (ret >= 0) 1941 msleep(200); 1942 else 1943 bt_dev_err(hdev, "CSR: Failed to suspend the device for our Barrot 8041a02 receive-issue workaround"); 1944 1945 pm_runtime_forbid(&data->udev->dev); 1946 1947 device_set_wakeup_capable(&data->udev->dev, false); 1948 1949 /* Re-enable autosuspend if this was requested */ 1950 if (enable_autosuspend) 1951 usb_enable_autosuspend(data->udev); 1952 } 1953 1954 kfree_skb(skb); 1955 1956 return 0; 1957 } 1958 1959 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode) 1960 { 1961 struct sk_buff *skb; 1962 struct hci_event_hdr *hdr; 1963 struct hci_ev_cmd_complete *evt; 1964 1965 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL); 1966 if (!skb) 1967 return -ENOMEM; 1968 1969 hdr = skb_put(skb, sizeof(*hdr)); 1970 hdr->evt = HCI_EV_CMD_COMPLETE; 1971 hdr->plen = sizeof(*evt) + 1; 1972 1973 evt = skb_put(skb, sizeof(*evt)); 1974 evt->ncmd = 0x01; 1975 evt->opcode = cpu_to_le16(opcode); 1976 1977 skb_put_u8(skb, 0x00); 1978 1979 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 1980 1981 return hci_recv_frame(hdev, skb); 1982 } 1983 1984 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer, 1985 int count) 1986 { 1987 struct hci_dev *hdev = data->hdev; 1988 1989 /* When the device is in bootloader mode, then it can send 1990 * events via the bulk endpoint. These events are treated the 1991 * same way as the ones received from the interrupt endpoint. 1992 */ 1993 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) 1994 return btusb_recv_intr(data, buffer, count); 1995 1996 return btusb_recv_bulk(data, buffer, count); 1997 } 1998 1999 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb) 2000 { 2001 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) { 2002 struct hci_event_hdr *hdr = (void *)skb->data; 2003 2004 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff && 2005 hdr->plen > 0) { 2006 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1; 2007 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1; 2008 2009 switch (skb->data[2]) { 2010 case 0x02: 2011 /* When switching to the operational firmware 2012 * the device sends a vendor specific event 2013 * indicating that the bootup completed. 2014 */ 2015 btintel_bootup(hdev, ptr, len); 2016 break; 2017 case 0x06: 2018 /* When the firmware loading completes the 2019 * device sends out a vendor specific event 2020 * indicating the result of the firmware 2021 * loading. 2022 */ 2023 btintel_secure_send_result(hdev, ptr, len); 2024 break; 2025 } 2026 } 2027 } 2028 2029 return hci_recv_frame(hdev, skb); 2030 } 2031 2032 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb) 2033 { 2034 struct urb *urb; 2035 2036 BT_DBG("%s", hdev->name); 2037 2038 switch (hci_skb_pkt_type(skb)) { 2039 case HCI_COMMAND_PKT: 2040 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) { 2041 struct hci_command_hdr *cmd = (void *)skb->data; 2042 __u16 opcode = le16_to_cpu(cmd->opcode); 2043 2044 /* When in bootloader mode and the command 0xfc09 2045 * is received, it needs to be send down the 2046 * bulk endpoint. So allocate a bulk URB instead. 2047 */ 2048 if (opcode == 0xfc09) 2049 urb = alloc_bulk_urb(hdev, skb); 2050 else 2051 urb = alloc_ctrl_urb(hdev, skb); 2052 2053 /* When the 0xfc01 command is issued to boot into 2054 * the operational firmware, it will actually not 2055 * send a command complete event. To keep the flow 2056 * control working inject that event here. 2057 */ 2058 if (opcode == 0xfc01) 2059 inject_cmd_complete(hdev, opcode); 2060 } else { 2061 urb = alloc_ctrl_urb(hdev, skb); 2062 } 2063 if (IS_ERR(urb)) 2064 return PTR_ERR(urb); 2065 2066 hdev->stat.cmd_tx++; 2067 return submit_or_queue_tx_urb(hdev, urb); 2068 2069 case HCI_ACLDATA_PKT: 2070 urb = alloc_bulk_urb(hdev, skb); 2071 if (IS_ERR(urb)) 2072 return PTR_ERR(urb); 2073 2074 hdev->stat.acl_tx++; 2075 return submit_or_queue_tx_urb(hdev, urb); 2076 2077 case HCI_SCODATA_PKT: 2078 if (hci_conn_num(hdev, SCO_LINK) < 1) 2079 return -ENODEV; 2080 2081 urb = alloc_isoc_urb(hdev, skb); 2082 if (IS_ERR(urb)) 2083 return PTR_ERR(urb); 2084 2085 hdev->stat.sco_tx++; 2086 return submit_tx_urb(hdev, urb); 2087 } 2088 2089 return -EILSEQ; 2090 } 2091 2092 /* UHW CR mapping */ 2093 #define MTK_BT_MISC 0x70002510 2094 #define MTK_BT_SUBSYS_RST 0x70002610 2095 #define MTK_UDMA_INT_STA_BT 0x74000024 2096 #define MTK_UDMA_INT_STA_BT1 0x74000308 2097 #define MTK_BT_WDT_STATUS 0x740003A0 2098 #define MTK_EP_RST_OPT 0x74011890 2099 #define MTK_EP_RST_IN_OUT_OPT 0x00010001 2100 #define MTK_BT_RST_DONE 0x00000100 2101 #define MTK_BT_RESET_WAIT_MS 100 2102 #define MTK_BT_RESET_NUM_TRIES 10 2103 #define FIRMWARE_MT7663 "mediatek/mt7663pr2h.bin" 2104 #define FIRMWARE_MT7668 "mediatek/mt7668pr2h.bin" 2105 2106 #define HCI_WMT_MAX_EVENT_SIZE 64 2107 /* It is for mt79xx download rom patch*/ 2108 #define MTK_FW_ROM_PATCH_HEADER_SIZE 32 2109 #define MTK_FW_ROM_PATCH_GD_SIZE 64 2110 #define MTK_FW_ROM_PATCH_SEC_MAP_SIZE 64 2111 #define MTK_SEC_MAP_COMMON_SIZE 12 2112 #define MTK_SEC_MAP_NEED_SEND_SIZE 52 2113 2114 enum { 2115 BTMTK_WMT_PATCH_DWNLD = 0x1, 2116 BTMTK_WMT_FUNC_CTRL = 0x6, 2117 BTMTK_WMT_RST = 0x7, 2118 BTMTK_WMT_SEMAPHORE = 0x17, 2119 }; 2120 2121 enum { 2122 BTMTK_WMT_INVALID, 2123 BTMTK_WMT_PATCH_UNDONE, 2124 BTMTK_WMT_PATCH_PROGRESS, 2125 BTMTK_WMT_PATCH_DONE, 2126 BTMTK_WMT_ON_UNDONE, 2127 BTMTK_WMT_ON_DONE, 2128 BTMTK_WMT_ON_PROGRESS, 2129 }; 2130 2131 struct btmtk_wmt_hdr { 2132 u8 dir; 2133 u8 op; 2134 __le16 dlen; 2135 u8 flag; 2136 } __packed; 2137 2138 struct btmtk_hci_wmt_cmd { 2139 struct btmtk_wmt_hdr hdr; 2140 u8 data[]; 2141 } __packed; 2142 2143 struct btmtk_hci_wmt_evt { 2144 struct hci_event_hdr hhdr; 2145 struct btmtk_wmt_hdr whdr; 2146 } __packed; 2147 2148 struct btmtk_hci_wmt_evt_funcc { 2149 struct btmtk_hci_wmt_evt hwhdr; 2150 __be16 status; 2151 } __packed; 2152 2153 struct btmtk_tci_sleep { 2154 u8 mode; 2155 __le16 duration; 2156 __le16 host_duration; 2157 u8 host_wakeup_pin; 2158 u8 time_compensation; 2159 } __packed; 2160 2161 struct btmtk_hci_wmt_params { 2162 u8 op; 2163 u8 flag; 2164 u16 dlen; 2165 const void *data; 2166 u32 *status; 2167 }; 2168 2169 struct btmtk_patch_header { 2170 u8 datetime[16]; 2171 u8 platform[4]; 2172 __le16 hwver; 2173 __le16 swver; 2174 __le32 magicnum; 2175 } __packed; 2176 2177 struct btmtk_global_desc { 2178 __le32 patch_ver; 2179 __le32 sub_sys; 2180 __le32 feature_opt; 2181 __le32 section_num; 2182 } __packed; 2183 2184 struct btmtk_section_map { 2185 __le32 sectype; 2186 __le32 secoffset; 2187 __le32 secsize; 2188 union { 2189 __le32 u4SecSpec[13]; 2190 struct { 2191 __le32 dlAddr; 2192 __le32 dlsize; 2193 __le32 seckeyidx; 2194 __le32 alignlen; 2195 __le32 sectype; 2196 __le32 dlmodecrctype; 2197 __le32 crc; 2198 __le32 reserved[6]; 2199 } bin_info_spec; 2200 }; 2201 } __packed; 2202 2203 static void btusb_mtk_wmt_recv(struct urb *urb) 2204 { 2205 struct hci_dev *hdev = urb->context; 2206 struct btusb_data *data = hci_get_drvdata(hdev); 2207 struct hci_event_hdr *hdr; 2208 struct sk_buff *skb; 2209 int err; 2210 2211 if (urb->status == 0 && urb->actual_length > 0) { 2212 hdev->stat.byte_rx += urb->actual_length; 2213 2214 /* WMT event shouldn't be fragmented and the size should be 2215 * less than HCI_WMT_MAX_EVENT_SIZE. 2216 */ 2217 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC); 2218 if (!skb) { 2219 hdev->stat.err_rx++; 2220 return; 2221 } 2222 2223 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 2224 skb_put_data(skb, urb->transfer_buffer, urb->actual_length); 2225 2226 hdr = (void *)skb->data; 2227 /* Fix up the vendor event id with 0xff for vendor specific 2228 * instead of 0xe4 so that event send via monitoring socket can 2229 * be parsed properly. 2230 */ 2231 hdr->evt = 0xff; 2232 2233 /* When someone waits for the WMT event, the skb is being cloned 2234 * and being processed the events from there then. 2235 */ 2236 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) { 2237 data->evt_skb = skb_clone(skb, GFP_ATOMIC); 2238 if (!data->evt_skb) { 2239 kfree_skb(skb); 2240 return; 2241 } 2242 } 2243 2244 err = hci_recv_frame(hdev, skb); 2245 if (err < 0) { 2246 kfree_skb(data->evt_skb); 2247 data->evt_skb = NULL; 2248 return; 2249 } 2250 2251 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT, 2252 &data->flags)) { 2253 /* Barrier to sync with other CPUs */ 2254 smp_mb__after_atomic(); 2255 wake_up_bit(&data->flags, 2256 BTUSB_TX_WAIT_VND_EVT); 2257 } 2258 return; 2259 } else if (urb->status == -ENOENT) { 2260 /* Avoid suspend failed when usb_kill_urb */ 2261 return; 2262 } 2263 2264 usb_mark_last_busy(data->udev); 2265 2266 /* The URB complete handler is still called with urb->actual_length = 0 2267 * when the event is not available, so we should keep re-submitting 2268 * URB until WMT event returns, Also, It's necessary to wait some time 2269 * between the two consecutive control URBs to relax the target device 2270 * to generate the event. Otherwise, the WMT event cannot return from 2271 * the device successfully. 2272 */ 2273 udelay(500); 2274 2275 usb_anchor_urb(urb, &data->ctrl_anchor); 2276 err = usb_submit_urb(urb, GFP_ATOMIC); 2277 if (err < 0) { 2278 /* -EPERM: urb is being killed; 2279 * -ENODEV: device got disconnected 2280 */ 2281 if (err != -EPERM && err != -ENODEV) 2282 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 2283 urb, -err); 2284 usb_unanchor_urb(urb); 2285 } 2286 } 2287 2288 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev) 2289 { 2290 struct btusb_data *data = hci_get_drvdata(hdev); 2291 struct usb_ctrlrequest *dr; 2292 unsigned char *buf; 2293 int err, size = 64; 2294 unsigned int pipe; 2295 struct urb *urb; 2296 2297 urb = usb_alloc_urb(0, GFP_KERNEL); 2298 if (!urb) 2299 return -ENOMEM; 2300 2301 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 2302 if (!dr) { 2303 usb_free_urb(urb); 2304 return -ENOMEM; 2305 } 2306 2307 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN; 2308 dr->bRequest = 1; 2309 dr->wIndex = cpu_to_le16(0); 2310 dr->wValue = cpu_to_le16(48); 2311 dr->wLength = cpu_to_le16(size); 2312 2313 buf = kmalloc(size, GFP_KERNEL); 2314 if (!buf) { 2315 kfree(dr); 2316 usb_free_urb(urb); 2317 return -ENOMEM; 2318 } 2319 2320 pipe = usb_rcvctrlpipe(data->udev, 0); 2321 2322 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 2323 buf, size, btusb_mtk_wmt_recv, hdev); 2324 2325 urb->transfer_flags |= URB_FREE_BUFFER; 2326 2327 usb_anchor_urb(urb, &data->ctrl_anchor); 2328 err = usb_submit_urb(urb, GFP_KERNEL); 2329 if (err < 0) { 2330 if (err != -EPERM && err != -ENODEV) 2331 bt_dev_err(hdev, "urb %p submission failed (%d)", 2332 urb, -err); 2333 usb_unanchor_urb(urb); 2334 } 2335 2336 usb_free_urb(urb); 2337 2338 return err; 2339 } 2340 2341 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev, 2342 struct btmtk_hci_wmt_params *wmt_params) 2343 { 2344 struct btusb_data *data = hci_get_drvdata(hdev); 2345 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc; 2346 u32 hlen, status = BTMTK_WMT_INVALID; 2347 struct btmtk_hci_wmt_evt *wmt_evt; 2348 struct btmtk_hci_wmt_cmd *wc; 2349 struct btmtk_wmt_hdr *hdr; 2350 int err; 2351 2352 /* Send the WMT command and wait until the WMT event returns */ 2353 hlen = sizeof(*hdr) + wmt_params->dlen; 2354 if (hlen > 255) 2355 return -EINVAL; 2356 2357 wc = kzalloc(hlen, GFP_KERNEL); 2358 if (!wc) 2359 return -ENOMEM; 2360 2361 hdr = &wc->hdr; 2362 hdr->dir = 1; 2363 hdr->op = wmt_params->op; 2364 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1); 2365 hdr->flag = wmt_params->flag; 2366 memcpy(wc->data, wmt_params->data, wmt_params->dlen); 2367 2368 set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2369 2370 err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc); 2371 2372 if (err < 0) { 2373 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2374 goto err_free_wc; 2375 } 2376 2377 /* Submit control IN URB on demand to process the WMT event */ 2378 err = btusb_mtk_submit_wmt_recv_urb(hdev); 2379 if (err < 0) 2380 goto err_free_wc; 2381 2382 /* The vendor specific WMT commands are all answered by a vendor 2383 * specific event and will have the Command Status or Command 2384 * Complete as with usual HCI command flow control. 2385 * 2386 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT 2387 * state to be cleared. The driver specific event receive routine 2388 * will clear that state and with that indicate completion of the 2389 * WMT command. 2390 */ 2391 err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT, 2392 TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT); 2393 if (err == -EINTR) { 2394 bt_dev_err(hdev, "Execution of wmt command interrupted"); 2395 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2396 goto err_free_wc; 2397 } 2398 2399 if (err) { 2400 bt_dev_err(hdev, "Execution of wmt command timed out"); 2401 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2402 err = -ETIMEDOUT; 2403 goto err_free_wc; 2404 } 2405 2406 /* Parse and handle the return WMT event */ 2407 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data; 2408 if (wmt_evt->whdr.op != hdr->op) { 2409 bt_dev_err(hdev, "Wrong op received %d expected %d", 2410 wmt_evt->whdr.op, hdr->op); 2411 err = -EIO; 2412 goto err_free_skb; 2413 } 2414 2415 switch (wmt_evt->whdr.op) { 2416 case BTMTK_WMT_SEMAPHORE: 2417 if (wmt_evt->whdr.flag == 2) 2418 status = BTMTK_WMT_PATCH_UNDONE; 2419 else 2420 status = BTMTK_WMT_PATCH_DONE; 2421 break; 2422 case BTMTK_WMT_FUNC_CTRL: 2423 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt; 2424 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404) 2425 status = BTMTK_WMT_ON_DONE; 2426 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420) 2427 status = BTMTK_WMT_ON_PROGRESS; 2428 else 2429 status = BTMTK_WMT_ON_UNDONE; 2430 break; 2431 case BTMTK_WMT_PATCH_DWNLD: 2432 if (wmt_evt->whdr.flag == 2) 2433 status = BTMTK_WMT_PATCH_DONE; 2434 else if (wmt_evt->whdr.flag == 1) 2435 status = BTMTK_WMT_PATCH_PROGRESS; 2436 else 2437 status = BTMTK_WMT_PATCH_UNDONE; 2438 break; 2439 } 2440 2441 if (wmt_params->status) 2442 *wmt_params->status = status; 2443 2444 err_free_skb: 2445 kfree_skb(data->evt_skb); 2446 data->evt_skb = NULL; 2447 err_free_wc: 2448 kfree(wc); 2449 return err; 2450 } 2451 2452 static int btusb_mtk_setup_firmware_79xx(struct hci_dev *hdev, const char *fwname) 2453 { 2454 struct btmtk_hci_wmt_params wmt_params; 2455 struct btmtk_global_desc *globaldesc = NULL; 2456 struct btmtk_section_map *sectionmap; 2457 const struct firmware *fw; 2458 const u8 *fw_ptr; 2459 const u8 *fw_bin_ptr; 2460 int err, dlen, i, status; 2461 u8 flag, first_block, retry; 2462 u32 section_num, dl_size, section_offset; 2463 u8 cmd[64]; 2464 2465 err = request_firmware(&fw, fwname, &hdev->dev); 2466 if (err < 0) { 2467 bt_dev_err(hdev, "Failed to load firmware file (%d)", err); 2468 return err; 2469 } 2470 2471 fw_ptr = fw->data; 2472 fw_bin_ptr = fw_ptr; 2473 globaldesc = (struct btmtk_global_desc *)(fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE); 2474 section_num = le32_to_cpu(globaldesc->section_num); 2475 2476 for (i = 0; i < section_num; i++) { 2477 first_block = 1; 2478 fw_ptr = fw_bin_ptr; 2479 sectionmap = (struct btmtk_section_map *)(fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE + 2480 MTK_FW_ROM_PATCH_GD_SIZE + MTK_FW_ROM_PATCH_SEC_MAP_SIZE * i); 2481 2482 section_offset = le32_to_cpu(sectionmap->secoffset); 2483 dl_size = le32_to_cpu(sectionmap->bin_info_spec.dlsize); 2484 2485 if (dl_size > 0) { 2486 retry = 20; 2487 while (retry > 0) { 2488 cmd[0] = 0; /* 0 means legacy dl mode. */ 2489 memcpy(cmd + 1, 2490 fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE + 2491 MTK_FW_ROM_PATCH_GD_SIZE + MTK_FW_ROM_PATCH_SEC_MAP_SIZE * i + 2492 MTK_SEC_MAP_COMMON_SIZE, 2493 MTK_SEC_MAP_NEED_SEND_SIZE + 1); 2494 2495 wmt_params.op = BTMTK_WMT_PATCH_DWNLD; 2496 wmt_params.status = &status; 2497 wmt_params.flag = 0; 2498 wmt_params.dlen = MTK_SEC_MAP_NEED_SEND_SIZE + 1; 2499 wmt_params.data = &cmd; 2500 2501 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2502 if (err < 0) { 2503 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)", 2504 err); 2505 goto err_release_fw; 2506 } 2507 2508 if (status == BTMTK_WMT_PATCH_UNDONE) { 2509 break; 2510 } else if (status == BTMTK_WMT_PATCH_PROGRESS) { 2511 msleep(100); 2512 retry--; 2513 } else if (status == BTMTK_WMT_PATCH_DONE) { 2514 goto next_section; 2515 } else { 2516 bt_dev_err(hdev, "Failed wmt patch dwnld status (%d)", 2517 status); 2518 goto err_release_fw; 2519 } 2520 } 2521 2522 fw_ptr += section_offset; 2523 wmt_params.op = BTMTK_WMT_PATCH_DWNLD; 2524 wmt_params.status = NULL; 2525 2526 while (dl_size > 0) { 2527 dlen = min_t(int, 250, dl_size); 2528 if (first_block == 1) { 2529 flag = 1; 2530 first_block = 0; 2531 } else if (dl_size - dlen <= 0) { 2532 flag = 3; 2533 } else { 2534 flag = 2; 2535 } 2536 2537 wmt_params.flag = flag; 2538 wmt_params.dlen = dlen; 2539 wmt_params.data = fw_ptr; 2540 2541 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2542 if (err < 0) { 2543 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)", 2544 err); 2545 goto err_release_fw; 2546 } 2547 2548 dl_size -= dlen; 2549 fw_ptr += dlen; 2550 } 2551 } 2552 next_section: 2553 continue; 2554 } 2555 /* Wait a few moments for firmware activation done */ 2556 usleep_range(100000, 120000); 2557 2558 err_release_fw: 2559 release_firmware(fw); 2560 2561 return err; 2562 } 2563 2564 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname) 2565 { 2566 struct btmtk_hci_wmt_params wmt_params; 2567 const struct firmware *fw; 2568 const u8 *fw_ptr; 2569 size_t fw_size; 2570 int err, dlen; 2571 u8 flag, param; 2572 2573 err = request_firmware(&fw, fwname, &hdev->dev); 2574 if (err < 0) { 2575 bt_dev_err(hdev, "Failed to load firmware file (%d)", err); 2576 return err; 2577 } 2578 2579 /* Power on data RAM the firmware relies on. */ 2580 param = 1; 2581 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2582 wmt_params.flag = 3; 2583 wmt_params.dlen = sizeof(param); 2584 wmt_params.data = ¶m; 2585 wmt_params.status = NULL; 2586 2587 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2588 if (err < 0) { 2589 bt_dev_err(hdev, "Failed to power on data RAM (%d)", err); 2590 goto err_release_fw; 2591 } 2592 2593 fw_ptr = fw->data; 2594 fw_size = fw->size; 2595 2596 /* The size of patch header is 30 bytes, should be skip */ 2597 if (fw_size < 30) { 2598 err = -EINVAL; 2599 goto err_release_fw; 2600 } 2601 2602 fw_size -= 30; 2603 fw_ptr += 30; 2604 flag = 1; 2605 2606 wmt_params.op = BTMTK_WMT_PATCH_DWNLD; 2607 wmt_params.status = NULL; 2608 2609 while (fw_size > 0) { 2610 dlen = min_t(int, 250, fw_size); 2611 2612 /* Tell device the position in sequence */ 2613 if (fw_size - dlen <= 0) 2614 flag = 3; 2615 else if (fw_size < fw->size - 30) 2616 flag = 2; 2617 2618 wmt_params.flag = flag; 2619 wmt_params.dlen = dlen; 2620 wmt_params.data = fw_ptr; 2621 2622 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2623 if (err < 0) { 2624 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)", 2625 err); 2626 goto err_release_fw; 2627 } 2628 2629 fw_size -= dlen; 2630 fw_ptr += dlen; 2631 } 2632 2633 wmt_params.op = BTMTK_WMT_RST; 2634 wmt_params.flag = 4; 2635 wmt_params.dlen = 0; 2636 wmt_params.data = NULL; 2637 wmt_params.status = NULL; 2638 2639 /* Activate funciton the firmware providing to */ 2640 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2641 if (err < 0) { 2642 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err); 2643 goto err_release_fw; 2644 } 2645 2646 /* Wait a few moments for firmware activation done */ 2647 usleep_range(10000, 12000); 2648 2649 err_release_fw: 2650 release_firmware(fw); 2651 2652 return err; 2653 } 2654 2655 static int btusb_mtk_func_query(struct hci_dev *hdev) 2656 { 2657 struct btmtk_hci_wmt_params wmt_params; 2658 int status, err; 2659 u8 param = 0; 2660 2661 /* Query whether the function is enabled */ 2662 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2663 wmt_params.flag = 4; 2664 wmt_params.dlen = sizeof(param); 2665 wmt_params.data = ¶m; 2666 wmt_params.status = &status; 2667 2668 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2669 if (err < 0) { 2670 bt_dev_err(hdev, "Failed to query function status (%d)", err); 2671 return err; 2672 } 2673 2674 return status; 2675 } 2676 2677 static int btusb_mtk_uhw_reg_write(struct btusb_data *data, u32 reg, u32 val) 2678 { 2679 struct hci_dev *hdev = data->hdev; 2680 int pipe, err; 2681 void *buf; 2682 2683 buf = kzalloc(4, GFP_KERNEL); 2684 if (!buf) 2685 return -ENOMEM; 2686 2687 put_unaligned_le32(val, buf); 2688 2689 pipe = usb_sndctrlpipe(data->udev, 0); 2690 err = usb_control_msg(data->udev, pipe, 0x02, 2691 0x5E, 2692 reg >> 16, reg & 0xffff, 2693 buf, 4, USB_CTRL_SET_TIMEOUT); 2694 if (err < 0) { 2695 bt_dev_err(hdev, "Failed to write uhw reg(%d)", err); 2696 goto err_free_buf; 2697 } 2698 2699 err_free_buf: 2700 kfree(buf); 2701 2702 return err; 2703 } 2704 2705 static int btusb_mtk_uhw_reg_read(struct btusb_data *data, u32 reg, u32 *val) 2706 { 2707 struct hci_dev *hdev = data->hdev; 2708 int pipe, err; 2709 void *buf; 2710 2711 buf = kzalloc(4, GFP_KERNEL); 2712 if (!buf) 2713 return -ENOMEM; 2714 2715 pipe = usb_rcvctrlpipe(data->udev, 0); 2716 err = usb_control_msg(data->udev, pipe, 0x01, 2717 0xDE, 2718 reg >> 16, reg & 0xffff, 2719 buf, 4, USB_CTRL_SET_TIMEOUT); 2720 if (err < 0) { 2721 bt_dev_err(hdev, "Failed to read uhw reg(%d)", err); 2722 goto err_free_buf; 2723 } 2724 2725 *val = get_unaligned_le32(buf); 2726 bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val); 2727 2728 err_free_buf: 2729 kfree(buf); 2730 2731 return err; 2732 } 2733 2734 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val) 2735 { 2736 int pipe, err, size = sizeof(u32); 2737 void *buf; 2738 2739 buf = kzalloc(size, GFP_KERNEL); 2740 if (!buf) 2741 return -ENOMEM; 2742 2743 pipe = usb_rcvctrlpipe(data->udev, 0); 2744 err = usb_control_msg(data->udev, pipe, 0x63, 2745 USB_TYPE_VENDOR | USB_DIR_IN, 2746 reg >> 16, reg & 0xffff, 2747 buf, size, USB_CTRL_SET_TIMEOUT); 2748 if (err < 0) 2749 goto err_free_buf; 2750 2751 *val = get_unaligned_le32(buf); 2752 2753 err_free_buf: 2754 kfree(buf); 2755 2756 return err; 2757 } 2758 2759 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id) 2760 { 2761 return btusb_mtk_reg_read(data, reg, id); 2762 } 2763 2764 static int btusb_mtk_setup(struct hci_dev *hdev) 2765 { 2766 struct btusb_data *data = hci_get_drvdata(hdev); 2767 struct btmtk_hci_wmt_params wmt_params; 2768 ktime_t calltime, delta, rettime; 2769 struct btmtk_tci_sleep tci_sleep; 2770 unsigned long long duration; 2771 struct sk_buff *skb; 2772 const char *fwname; 2773 int err, status; 2774 u32 dev_id; 2775 char fw_bin_name[64]; 2776 u32 fw_version = 0; 2777 u8 param; 2778 2779 calltime = ktime_get(); 2780 2781 err = btusb_mtk_id_get(data, 0x80000008, &dev_id); 2782 if (err < 0) { 2783 bt_dev_err(hdev, "Failed to get device id (%d)", err); 2784 return err; 2785 } 2786 2787 if (!dev_id) { 2788 err = btusb_mtk_id_get(data, 0x70010200, &dev_id); 2789 if (err < 0) { 2790 bt_dev_err(hdev, "Failed to get device id (%d)", err); 2791 return err; 2792 } 2793 err = btusb_mtk_id_get(data, 0x80021004, &fw_version); 2794 if (err < 0) { 2795 bt_dev_err(hdev, "Failed to get fw version (%d)", err); 2796 return err; 2797 } 2798 } 2799 2800 switch (dev_id) { 2801 case 0x7663: 2802 fwname = FIRMWARE_MT7663; 2803 break; 2804 case 0x7668: 2805 fwname = FIRMWARE_MT7668; 2806 break; 2807 case 0x7961: 2808 snprintf(fw_bin_name, sizeof(fw_bin_name), 2809 "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin", 2810 dev_id & 0xffff, (fw_version & 0xff) + 1); 2811 err = btusb_mtk_setup_firmware_79xx(hdev, fw_bin_name); 2812 2813 /* It's Device EndPoint Reset Option Register */ 2814 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT); 2815 2816 /* Enable Bluetooth protocol */ 2817 param = 1; 2818 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2819 wmt_params.flag = 0; 2820 wmt_params.dlen = sizeof(param); 2821 wmt_params.data = ¶m; 2822 wmt_params.status = NULL; 2823 2824 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2825 if (err < 0) { 2826 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 2827 return err; 2828 } 2829 2830 hci_set_msft_opcode(hdev, 0xFD30); 2831 goto done; 2832 default: 2833 bt_dev_err(hdev, "Unsupported hardware variant (%08x)", 2834 dev_id); 2835 return -ENODEV; 2836 } 2837 2838 /* Query whether the firmware is already download */ 2839 wmt_params.op = BTMTK_WMT_SEMAPHORE; 2840 wmt_params.flag = 1; 2841 wmt_params.dlen = 0; 2842 wmt_params.data = NULL; 2843 wmt_params.status = &status; 2844 2845 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2846 if (err < 0) { 2847 bt_dev_err(hdev, "Failed to query firmware status (%d)", err); 2848 return err; 2849 } 2850 2851 if (status == BTMTK_WMT_PATCH_DONE) { 2852 bt_dev_info(hdev, "firmware already downloaded"); 2853 goto ignore_setup_fw; 2854 } 2855 2856 /* Setup a firmware which the device definitely requires */ 2857 err = btusb_mtk_setup_firmware(hdev, fwname); 2858 if (err < 0) 2859 return err; 2860 2861 ignore_setup_fw: 2862 err = readx_poll_timeout(btusb_mtk_func_query, hdev, status, 2863 status < 0 || status != BTMTK_WMT_ON_PROGRESS, 2864 2000, 5000000); 2865 /* -ETIMEDOUT happens */ 2866 if (err < 0) 2867 return err; 2868 2869 /* The other errors happen in btusb_mtk_func_query */ 2870 if (status < 0) 2871 return status; 2872 2873 if (status == BTMTK_WMT_ON_DONE) { 2874 bt_dev_info(hdev, "function already on"); 2875 goto ignore_func_on; 2876 } 2877 2878 /* Enable Bluetooth protocol */ 2879 param = 1; 2880 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2881 wmt_params.flag = 0; 2882 wmt_params.dlen = sizeof(param); 2883 wmt_params.data = ¶m; 2884 wmt_params.status = NULL; 2885 2886 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2887 if (err < 0) { 2888 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 2889 return err; 2890 } 2891 2892 ignore_func_on: 2893 /* Apply the low power environment setup */ 2894 tci_sleep.mode = 0x5; 2895 tci_sleep.duration = cpu_to_le16(0x640); 2896 tci_sleep.host_duration = cpu_to_le16(0x640); 2897 tci_sleep.host_wakeup_pin = 0; 2898 tci_sleep.time_compensation = 0; 2899 2900 skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep, 2901 HCI_INIT_TIMEOUT); 2902 if (IS_ERR(skb)) { 2903 err = PTR_ERR(skb); 2904 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err); 2905 return err; 2906 } 2907 kfree_skb(skb); 2908 2909 done: 2910 rettime = ktime_get(); 2911 delta = ktime_sub(rettime, calltime); 2912 duration = (unsigned long long)ktime_to_ns(delta) >> 10; 2913 2914 bt_dev_info(hdev, "Device setup in %llu usecs", duration); 2915 2916 return 0; 2917 } 2918 2919 static int btusb_mtk_shutdown(struct hci_dev *hdev) 2920 { 2921 struct btmtk_hci_wmt_params wmt_params; 2922 u8 param = 0; 2923 int err; 2924 2925 /* Disable the device */ 2926 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2927 wmt_params.flag = 0; 2928 wmt_params.dlen = sizeof(param); 2929 wmt_params.data = ¶m; 2930 wmt_params.status = NULL; 2931 2932 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2933 if (err < 0) { 2934 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 2935 return err; 2936 } 2937 2938 return 0; 2939 } 2940 2941 static void btusb_mtk_cmd_timeout(struct hci_dev *hdev) 2942 { 2943 struct btusb_data *data = hci_get_drvdata(hdev); 2944 u32 val; 2945 int err, retry = 0; 2946 2947 /* It's MediaTek specific bluetooth reset mechanism via USB */ 2948 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 2949 bt_dev_err(hdev, "last reset failed? Not resetting again"); 2950 return; 2951 } 2952 2953 err = usb_autopm_get_interface(data->intf); 2954 if (err < 0) 2955 return; 2956 2957 btusb_stop_traffic(data); 2958 usb_kill_anchored_urbs(&data->tx_anchor); 2959 2960 /* It's Device EndPoint Reset Option Register */ 2961 bt_dev_dbg(hdev, "Initiating reset mechanism via uhw"); 2962 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT); 2963 btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val); 2964 2965 /* Reset the bluetooth chip via USB interface. */ 2966 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1); 2967 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF); 2968 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val); 2969 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF); 2970 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val); 2971 /* MT7921 need to delay 20ms between toggle reset bit */ 2972 msleep(20); 2973 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0); 2974 btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val); 2975 2976 /* Poll the register until reset is completed */ 2977 do { 2978 btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val); 2979 if (val & MTK_BT_RST_DONE) { 2980 bt_dev_dbg(hdev, "Bluetooth Reset Successfully"); 2981 break; 2982 } 2983 2984 bt_dev_dbg(hdev, "Polling Bluetooth Reset CR"); 2985 retry++; 2986 msleep(MTK_BT_RESET_WAIT_MS); 2987 } while (retry < MTK_BT_RESET_NUM_TRIES); 2988 2989 btusb_mtk_id_get(data, 0x70010200, &val); 2990 if (!val) 2991 bt_dev_err(hdev, "Can't get device id, subsys reset fail."); 2992 2993 usb_queue_reset_device(data->intf); 2994 2995 clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags); 2996 } 2997 2998 static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb) 2999 { 3000 struct btusb_data *data = hci_get_drvdata(hdev); 3001 u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle); 3002 3003 switch (handle) { 3004 case 0xfc6f: /* Firmware dump from device */ 3005 /* When the firmware hangs, the device can no longer 3006 * suspend and thus disable auto-suspend. 3007 */ 3008 usb_disable_autosuspend(data->udev); 3009 fallthrough; 3010 case 0x05ff: /* Firmware debug logging 1 */ 3011 case 0x05fe: /* Firmware debug logging 2 */ 3012 return hci_recv_diag(hdev, skb); 3013 } 3014 3015 return hci_recv_frame(hdev, skb); 3016 } 3017 3018 MODULE_FIRMWARE(FIRMWARE_MT7663); 3019 MODULE_FIRMWARE(FIRMWARE_MT7668); 3020 3021 #ifdef CONFIG_PM 3022 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */ 3023 static int marvell_config_oob_wake(struct hci_dev *hdev) 3024 { 3025 struct sk_buff *skb; 3026 struct btusb_data *data = hci_get_drvdata(hdev); 3027 struct device *dev = &data->udev->dev; 3028 u16 pin, gap, opcode; 3029 int ret; 3030 u8 cmd[5]; 3031 3032 /* Move on if no wakeup pin specified */ 3033 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) || 3034 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap)) 3035 return 0; 3036 3037 /* Vendor specific command to configure a GPIO as wake-up pin */ 3038 opcode = hci_opcode_pack(0x3F, 0x59); 3039 cmd[0] = opcode & 0xFF; 3040 cmd[1] = opcode >> 8; 3041 cmd[2] = 2; /* length of parameters that follow */ 3042 cmd[3] = pin; 3043 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */ 3044 3045 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 3046 if (!skb) { 3047 bt_dev_err(hdev, "%s: No memory", __func__); 3048 return -ENOMEM; 3049 } 3050 3051 skb_put_data(skb, cmd, sizeof(cmd)); 3052 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; 3053 3054 ret = btusb_send_frame(hdev, skb); 3055 if (ret) { 3056 bt_dev_err(hdev, "%s: configuration failed", __func__); 3057 kfree_skb(skb); 3058 return ret; 3059 } 3060 3061 return 0; 3062 } 3063 #endif 3064 3065 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev, 3066 const bdaddr_t *bdaddr) 3067 { 3068 struct sk_buff *skb; 3069 u8 buf[8]; 3070 long ret; 3071 3072 buf[0] = 0xfe; 3073 buf[1] = sizeof(bdaddr_t); 3074 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t)); 3075 3076 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT); 3077 if (IS_ERR(skb)) { 3078 ret = PTR_ERR(skb); 3079 bt_dev_err(hdev, "changing Marvell device address failed (%ld)", 3080 ret); 3081 return ret; 3082 } 3083 kfree_skb(skb); 3084 3085 return 0; 3086 } 3087 3088 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev, 3089 const bdaddr_t *bdaddr) 3090 { 3091 struct sk_buff *skb; 3092 u8 buf[10]; 3093 long ret; 3094 3095 buf[0] = 0x01; 3096 buf[1] = 0x01; 3097 buf[2] = 0x00; 3098 buf[3] = sizeof(bdaddr_t); 3099 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t)); 3100 3101 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT); 3102 if (IS_ERR(skb)) { 3103 ret = PTR_ERR(skb); 3104 bt_dev_err(hdev, "Change address command failed (%ld)", ret); 3105 return ret; 3106 } 3107 kfree_skb(skb); 3108 3109 return 0; 3110 } 3111 3112 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev, 3113 const bdaddr_t *bdaddr) 3114 { 3115 struct sk_buff *skb; 3116 u8 buf[6]; 3117 long ret; 3118 3119 memcpy(buf, bdaddr, sizeof(bdaddr_t)); 3120 3121 skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf, 3122 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT); 3123 if (IS_ERR(skb)) { 3124 ret = PTR_ERR(skb); 3125 bt_dev_err(hdev, "Change address command failed (%ld)", ret); 3126 return ret; 3127 } 3128 kfree_skb(skb); 3129 3130 return 0; 3131 } 3132 3133 #define QCA_DFU_PACKET_LEN 4096 3134 3135 #define QCA_GET_TARGET_VERSION 0x09 3136 #define QCA_CHECK_STATUS 0x05 3137 #define QCA_DFU_DOWNLOAD 0x01 3138 3139 #define QCA_SYSCFG_UPDATED 0x40 3140 #define QCA_PATCH_UPDATED 0x80 3141 #define QCA_DFU_TIMEOUT 3000 3142 #define QCA_FLAG_MULTI_NVM 0x80 3143 3144 struct qca_version { 3145 __le32 rom_version; 3146 __le32 patch_version; 3147 __le32 ram_version; 3148 __le16 board_id; 3149 __le16 flag; 3150 __u8 reserved[4]; 3151 } __packed; 3152 3153 struct qca_rampatch_version { 3154 __le16 rom_version_high; 3155 __le16 rom_version_low; 3156 __le16 patch_version; 3157 } __packed; 3158 3159 struct qca_device_info { 3160 u32 rom_version; 3161 u8 rampatch_hdr; /* length of header in rampatch */ 3162 u8 nvm_hdr; /* length of header in NVM */ 3163 u8 ver_offset; /* offset of version structure in rampatch */ 3164 }; 3165 3166 static const struct qca_device_info qca_devices_table[] = { 3167 { 0x00000100, 20, 4, 8 }, /* Rome 1.0 */ 3168 { 0x00000101, 20, 4, 8 }, /* Rome 1.1 */ 3169 { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */ 3170 { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */ 3171 { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */ 3172 { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */ 3173 { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */ 3174 { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */ 3175 }; 3176 3177 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request, 3178 void *data, u16 size) 3179 { 3180 int pipe, err; 3181 u8 *buf; 3182 3183 buf = kmalloc(size, GFP_KERNEL); 3184 if (!buf) 3185 return -ENOMEM; 3186 3187 /* Found some of USB hosts have IOT issues with ours so that we should 3188 * not wait until HCI layer is ready. 3189 */ 3190 pipe = usb_rcvctrlpipe(udev, 0); 3191 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN, 3192 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 3193 if (err < 0) { 3194 dev_err(&udev->dev, "Failed to access otp area (%d)", err); 3195 goto done; 3196 } 3197 3198 memcpy(data, buf, size); 3199 3200 done: 3201 kfree(buf); 3202 3203 return err; 3204 } 3205 3206 static int btusb_setup_qca_download_fw(struct hci_dev *hdev, 3207 const struct firmware *firmware, 3208 size_t hdr_size) 3209 { 3210 struct btusb_data *btdata = hci_get_drvdata(hdev); 3211 struct usb_device *udev = btdata->udev; 3212 size_t count, size, sent = 0; 3213 int pipe, len, err; 3214 u8 *buf; 3215 3216 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL); 3217 if (!buf) 3218 return -ENOMEM; 3219 3220 count = firmware->size; 3221 3222 size = min_t(size_t, count, hdr_size); 3223 memcpy(buf, firmware->data, size); 3224 3225 /* USB patches should go down to controller through USB path 3226 * because binary format fits to go down through USB channel. 3227 * USB control path is for patching headers and USB bulk is for 3228 * patch body. 3229 */ 3230 pipe = usb_sndctrlpipe(udev, 0); 3231 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR, 3232 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 3233 if (err < 0) { 3234 bt_dev_err(hdev, "Failed to send headers (%d)", err); 3235 goto done; 3236 } 3237 3238 sent += size; 3239 count -= size; 3240 3241 /* ep2 need time to switch from function acl to function dfu, 3242 * so we add 20ms delay here. 3243 */ 3244 msleep(20); 3245 3246 while (count) { 3247 size = min_t(size_t, count, QCA_DFU_PACKET_LEN); 3248 3249 memcpy(buf, firmware->data + sent, size); 3250 3251 pipe = usb_sndbulkpipe(udev, 0x02); 3252 err = usb_bulk_msg(udev, pipe, buf, size, &len, 3253 QCA_DFU_TIMEOUT); 3254 if (err < 0) { 3255 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)", 3256 sent, firmware->size, err); 3257 break; 3258 } 3259 3260 if (size != len) { 3261 bt_dev_err(hdev, "Failed to get bulk buffer"); 3262 err = -EILSEQ; 3263 break; 3264 } 3265 3266 sent += size; 3267 count -= size; 3268 } 3269 3270 done: 3271 kfree(buf); 3272 return err; 3273 } 3274 3275 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev, 3276 struct qca_version *ver, 3277 const struct qca_device_info *info) 3278 { 3279 struct qca_rampatch_version *rver; 3280 const struct firmware *fw; 3281 u32 ver_rom, ver_patch, rver_rom; 3282 u16 rver_rom_low, rver_rom_high, rver_patch; 3283 char fwname[64]; 3284 int err; 3285 3286 ver_rom = le32_to_cpu(ver->rom_version); 3287 ver_patch = le32_to_cpu(ver->patch_version); 3288 3289 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom); 3290 3291 err = request_firmware(&fw, fwname, &hdev->dev); 3292 if (err) { 3293 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)", 3294 fwname, err); 3295 return err; 3296 } 3297 3298 bt_dev_info(hdev, "using rampatch file: %s", fwname); 3299 3300 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset); 3301 rver_rom_low = le16_to_cpu(rver->rom_version_low); 3302 rver_patch = le16_to_cpu(rver->patch_version); 3303 3304 if (ver_rom & ~0xffffU) { 3305 rver_rom_high = le16_to_cpu(rver->rom_version_high); 3306 rver_rom = le32_to_cpu(rver_rom_high << 16 | rver_rom_low); 3307 } else { 3308 rver_rom = rver_rom_low; 3309 } 3310 3311 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, " 3312 "firmware rome 0x%x build 0x%x", 3313 rver_rom, rver_patch, ver_rom, ver_patch); 3314 3315 if (rver_rom != ver_rom || rver_patch <= ver_patch) { 3316 bt_dev_err(hdev, "rampatch file version did not match with firmware"); 3317 err = -EINVAL; 3318 goto done; 3319 } 3320 3321 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr); 3322 3323 done: 3324 release_firmware(fw); 3325 3326 return err; 3327 } 3328 3329 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev, 3330 struct qca_version *ver, 3331 const struct qca_device_info *info) 3332 { 3333 const struct firmware *fw; 3334 char fwname[64]; 3335 int err; 3336 3337 if (((ver->flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) { 3338 /* if boardid equal 0, use default nvm without surfix */ 3339 if (le16_to_cpu(ver->board_id) == 0x0) { 3340 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin", 3341 le32_to_cpu(ver->rom_version)); 3342 } else { 3343 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x_%04x.bin", 3344 le32_to_cpu(ver->rom_version), 3345 le16_to_cpu(ver->board_id)); 3346 } 3347 } else { 3348 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin", 3349 le32_to_cpu(ver->rom_version)); 3350 } 3351 3352 err = request_firmware(&fw, fwname, &hdev->dev); 3353 if (err) { 3354 bt_dev_err(hdev, "failed to request NVM file: %s (%d)", 3355 fwname, err); 3356 return err; 3357 } 3358 3359 bt_dev_info(hdev, "using NVM file: %s", fwname); 3360 3361 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr); 3362 3363 release_firmware(fw); 3364 3365 return err; 3366 } 3367 3368 /* identify the ROM version and check whether patches are needed */ 3369 static bool btusb_qca_need_patch(struct usb_device *udev) 3370 { 3371 struct qca_version ver; 3372 3373 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3374 sizeof(ver)) < 0) 3375 return false; 3376 /* only low ROM versions need patches */ 3377 return !(le32_to_cpu(ver.rom_version) & ~0xffffU); 3378 } 3379 3380 static int btusb_setup_qca(struct hci_dev *hdev) 3381 { 3382 struct btusb_data *btdata = hci_get_drvdata(hdev); 3383 struct usb_device *udev = btdata->udev; 3384 const struct qca_device_info *info = NULL; 3385 struct qca_version ver; 3386 u32 ver_rom; 3387 u8 status; 3388 int i, err; 3389 3390 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3391 sizeof(ver)); 3392 if (err < 0) 3393 return err; 3394 3395 ver_rom = le32_to_cpu(ver.rom_version); 3396 3397 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) { 3398 if (ver_rom == qca_devices_table[i].rom_version) 3399 info = &qca_devices_table[i]; 3400 } 3401 if (!info) { 3402 /* If the rom_version is not matched in the qca_devices_table 3403 * and the high ROM version is not zero, we assume this chip no 3404 * need to load the rampatch and nvm. 3405 */ 3406 if (ver_rom & ~0xffffU) 3407 return 0; 3408 3409 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom); 3410 return -ENODEV; 3411 } 3412 3413 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status, 3414 sizeof(status)); 3415 if (err < 0) 3416 return err; 3417 3418 if (!(status & QCA_PATCH_UPDATED)) { 3419 err = btusb_setup_qca_load_rampatch(hdev, &ver, info); 3420 if (err < 0) 3421 return err; 3422 } 3423 3424 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3425 sizeof(ver)); 3426 if (err < 0) 3427 return err; 3428 3429 if (!(status & QCA_SYSCFG_UPDATED)) { 3430 err = btusb_setup_qca_load_nvm(hdev, &ver, info); 3431 if (err < 0) 3432 return err; 3433 } 3434 3435 return 0; 3436 } 3437 3438 static inline int __set_diag_interface(struct hci_dev *hdev) 3439 { 3440 struct btusb_data *data = hci_get_drvdata(hdev); 3441 struct usb_interface *intf = data->diag; 3442 int i; 3443 3444 if (!data->diag) 3445 return -ENODEV; 3446 3447 data->diag_tx_ep = NULL; 3448 data->diag_rx_ep = NULL; 3449 3450 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 3451 struct usb_endpoint_descriptor *ep_desc; 3452 3453 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 3454 3455 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 3456 data->diag_tx_ep = ep_desc; 3457 continue; 3458 } 3459 3460 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 3461 data->diag_rx_ep = ep_desc; 3462 continue; 3463 } 3464 } 3465 3466 if (!data->diag_tx_ep || !data->diag_rx_ep) { 3467 bt_dev_err(hdev, "invalid diagnostic descriptors"); 3468 return -ENODEV; 3469 } 3470 3471 return 0; 3472 } 3473 3474 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable) 3475 { 3476 struct btusb_data *data = hci_get_drvdata(hdev); 3477 struct sk_buff *skb; 3478 struct urb *urb; 3479 unsigned int pipe; 3480 3481 if (!data->diag_tx_ep) 3482 return ERR_PTR(-ENODEV); 3483 3484 urb = usb_alloc_urb(0, GFP_KERNEL); 3485 if (!urb) 3486 return ERR_PTR(-ENOMEM); 3487 3488 skb = bt_skb_alloc(2, GFP_KERNEL); 3489 if (!skb) { 3490 usb_free_urb(urb); 3491 return ERR_PTR(-ENOMEM); 3492 } 3493 3494 skb_put_u8(skb, 0xf0); 3495 skb_put_u8(skb, enable); 3496 3497 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress); 3498 3499 usb_fill_bulk_urb(urb, data->udev, pipe, 3500 skb->data, skb->len, btusb_tx_complete, skb); 3501 3502 skb->dev = (void *)hdev; 3503 3504 return urb; 3505 } 3506 3507 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable) 3508 { 3509 struct btusb_data *data = hci_get_drvdata(hdev); 3510 struct urb *urb; 3511 3512 if (!data->diag) 3513 return -ENODEV; 3514 3515 if (!test_bit(HCI_RUNNING, &hdev->flags)) 3516 return -ENETDOWN; 3517 3518 urb = alloc_diag_urb(hdev, enable); 3519 if (IS_ERR(urb)) 3520 return PTR_ERR(urb); 3521 3522 return submit_or_queue_tx_urb(hdev, urb); 3523 } 3524 3525 #ifdef CONFIG_PM 3526 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv) 3527 { 3528 struct btusb_data *data = priv; 3529 3530 pm_wakeup_event(&data->udev->dev, 0); 3531 pm_system_wakeup(); 3532 3533 /* Disable only if not already disabled (keep it balanced) */ 3534 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 3535 disable_irq_nosync(irq); 3536 disable_irq_wake(irq); 3537 } 3538 return IRQ_HANDLED; 3539 } 3540 3541 static const struct of_device_id btusb_match_table[] = { 3542 { .compatible = "usb1286,204e" }, 3543 { .compatible = "usbcf3,e300" }, /* QCA6174A */ 3544 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */ 3545 { } 3546 }; 3547 MODULE_DEVICE_TABLE(of, btusb_match_table); 3548 3549 /* Use an oob wakeup pin? */ 3550 static int btusb_config_oob_wake(struct hci_dev *hdev) 3551 { 3552 struct btusb_data *data = hci_get_drvdata(hdev); 3553 struct device *dev = &data->udev->dev; 3554 int irq, ret; 3555 3556 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 3557 3558 if (!of_match_device(btusb_match_table, dev)) 3559 return 0; 3560 3561 /* Move on if no IRQ specified */ 3562 irq = of_irq_get_byname(dev->of_node, "wakeup"); 3563 if (irq <= 0) { 3564 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__); 3565 return 0; 3566 } 3567 3568 irq_set_status_flags(irq, IRQ_NOAUTOEN); 3569 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler, 3570 0, "OOB Wake-on-BT", data); 3571 if (ret) { 3572 bt_dev_err(hdev, "%s: IRQ request failed", __func__); 3573 return ret; 3574 } 3575 3576 ret = device_init_wakeup(dev, true); 3577 if (ret) { 3578 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__); 3579 return ret; 3580 } 3581 3582 data->oob_wake_irq = irq; 3583 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq); 3584 return 0; 3585 } 3586 #endif 3587 3588 static void btusb_check_needs_reset_resume(struct usb_interface *intf) 3589 { 3590 if (dmi_check_system(btusb_needs_reset_resume_table)) 3591 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME; 3592 } 3593 3594 static bool btusb_prevent_wake(struct hci_dev *hdev) 3595 { 3596 struct btusb_data *data = hci_get_drvdata(hdev); 3597 3598 return !device_may_wakeup(&data->udev->dev); 3599 } 3600 3601 static int btusb_shutdown_qca(struct hci_dev *hdev) 3602 { 3603 struct sk_buff *skb; 3604 3605 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 3606 if (IS_ERR(skb)) { 3607 bt_dev_err(hdev, "HCI reset during shutdown failed"); 3608 return PTR_ERR(skb); 3609 } 3610 kfree_skb(skb); 3611 3612 return 0; 3613 } 3614 3615 static int btusb_probe(struct usb_interface *intf, 3616 const struct usb_device_id *id) 3617 { 3618 struct usb_endpoint_descriptor *ep_desc; 3619 struct gpio_desc *reset_gpio; 3620 struct btusb_data *data; 3621 struct hci_dev *hdev; 3622 unsigned ifnum_base; 3623 int i, err, priv_size; 3624 3625 BT_DBG("intf %p id %p", intf, id); 3626 3627 /* interface numbers are hardcoded in the spec */ 3628 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) { 3629 if (!(id->driver_info & BTUSB_IFNUM_2)) 3630 return -ENODEV; 3631 if (intf->cur_altsetting->desc.bInterfaceNumber != 2) 3632 return -ENODEV; 3633 } 3634 3635 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber; 3636 3637 if (!id->driver_info) { 3638 const struct usb_device_id *match; 3639 3640 match = usb_match_id(intf, blacklist_table); 3641 if (match) 3642 id = match; 3643 } 3644 3645 if (id->driver_info == BTUSB_IGNORE) 3646 return -ENODEV; 3647 3648 if (id->driver_info & BTUSB_ATH3012) { 3649 struct usb_device *udev = interface_to_usbdev(intf); 3650 3651 /* Old firmware would otherwise let ath3k driver load 3652 * patch and sysconfig files 3653 */ 3654 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 && 3655 !btusb_qca_need_patch(udev)) 3656 return -ENODEV; 3657 } 3658 3659 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); 3660 if (!data) 3661 return -ENOMEM; 3662 3663 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 3664 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 3665 3666 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 3667 data->intr_ep = ep_desc; 3668 continue; 3669 } 3670 3671 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 3672 data->bulk_tx_ep = ep_desc; 3673 continue; 3674 } 3675 3676 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 3677 data->bulk_rx_ep = ep_desc; 3678 continue; 3679 } 3680 } 3681 3682 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) 3683 return -ENODEV; 3684 3685 if (id->driver_info & BTUSB_AMP) { 3686 data->cmdreq_type = USB_TYPE_CLASS | 0x01; 3687 data->cmdreq = 0x2b; 3688 } else { 3689 data->cmdreq_type = USB_TYPE_CLASS; 3690 data->cmdreq = 0x00; 3691 } 3692 3693 data->udev = interface_to_usbdev(intf); 3694 data->intf = intf; 3695 3696 INIT_WORK(&data->work, btusb_work); 3697 INIT_WORK(&data->waker, btusb_waker); 3698 init_usb_anchor(&data->deferred); 3699 init_usb_anchor(&data->tx_anchor); 3700 spin_lock_init(&data->txlock); 3701 3702 init_usb_anchor(&data->intr_anchor); 3703 init_usb_anchor(&data->bulk_anchor); 3704 init_usb_anchor(&data->isoc_anchor); 3705 init_usb_anchor(&data->diag_anchor); 3706 init_usb_anchor(&data->ctrl_anchor); 3707 spin_lock_init(&data->rxlock); 3708 3709 priv_size = 0; 3710 3711 data->recv_event = hci_recv_frame; 3712 data->recv_bulk = btusb_recv_bulk; 3713 3714 if (id->driver_info & BTUSB_INTEL_COMBINED) { 3715 /* Allocate extra space for Intel device */ 3716 priv_size += sizeof(struct btintel_data); 3717 3718 /* Override the rx handlers */ 3719 data->recv_event = btusb_recv_event_intel; 3720 data->recv_bulk = btusb_recv_bulk_intel; 3721 } 3722 3723 data->recv_acl = hci_recv_frame; 3724 3725 hdev = hci_alloc_dev_priv(priv_size); 3726 if (!hdev) 3727 return -ENOMEM; 3728 3729 hdev->bus = HCI_USB; 3730 hci_set_drvdata(hdev, data); 3731 3732 if (id->driver_info & BTUSB_AMP) 3733 hdev->dev_type = HCI_AMP; 3734 else 3735 hdev->dev_type = HCI_PRIMARY; 3736 3737 data->hdev = hdev; 3738 3739 SET_HCIDEV_DEV(hdev, &intf->dev); 3740 3741 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset", 3742 GPIOD_OUT_LOW); 3743 if (IS_ERR(reset_gpio)) { 3744 err = PTR_ERR(reset_gpio); 3745 goto out_free_dev; 3746 } else if (reset_gpio) { 3747 data->reset_gpio = reset_gpio; 3748 } 3749 3750 hdev->open = btusb_open; 3751 hdev->close = btusb_close; 3752 hdev->flush = btusb_flush; 3753 hdev->send = btusb_send_frame; 3754 hdev->notify = btusb_notify; 3755 hdev->prevent_wake = btusb_prevent_wake; 3756 3757 #ifdef CONFIG_PM 3758 err = btusb_config_oob_wake(hdev); 3759 if (err) 3760 goto out_free_dev; 3761 3762 /* Marvell devices may need a specific chip configuration */ 3763 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) { 3764 err = marvell_config_oob_wake(hdev); 3765 if (err) 3766 goto out_free_dev; 3767 } 3768 #endif 3769 if (id->driver_info & BTUSB_CW6622) 3770 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 3771 3772 if (id->driver_info & BTUSB_BCM2045) 3773 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 3774 3775 if (id->driver_info & BTUSB_BCM92035) 3776 hdev->setup = btusb_setup_bcm92035; 3777 3778 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && 3779 (id->driver_info & BTUSB_BCM_PATCHRAM)) { 3780 hdev->manufacturer = 15; 3781 hdev->setup = btbcm_setup_patchram; 3782 hdev->set_diag = btusb_bcm_set_diag; 3783 hdev->set_bdaddr = btbcm_set_bdaddr; 3784 3785 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 3786 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 3787 } 3788 3789 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && 3790 (id->driver_info & BTUSB_BCM_APPLE)) { 3791 hdev->manufacturer = 15; 3792 hdev->setup = btbcm_setup_apple; 3793 hdev->set_diag = btusb_bcm_set_diag; 3794 3795 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 3796 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 3797 } 3798 3799 /* Combined Intel Device setup to support multiple setup routine */ 3800 if (id->driver_info & BTUSB_INTEL_COMBINED) { 3801 err = btintel_configure_setup(hdev); 3802 if (err) 3803 goto out_free_dev; 3804 3805 /* Transport specific configuration */ 3806 hdev->send = btusb_send_frame_intel; 3807 hdev->cmd_timeout = btusb_intel_cmd_timeout; 3808 3809 if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD) 3810 btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD); 3811 } 3812 3813 if (id->driver_info & BTUSB_MARVELL) 3814 hdev->set_bdaddr = btusb_set_bdaddr_marvell; 3815 3816 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) && 3817 (id->driver_info & BTUSB_MEDIATEK)) { 3818 hdev->setup = btusb_mtk_setup; 3819 hdev->shutdown = btusb_mtk_shutdown; 3820 hdev->manufacturer = 70; 3821 hdev->cmd_timeout = btusb_mtk_cmd_timeout; 3822 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks); 3823 data->recv_acl = btusb_recv_acl_mtk; 3824 } 3825 3826 if (id->driver_info & BTUSB_SWAVE) { 3827 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks); 3828 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks); 3829 } 3830 3831 if (id->driver_info & BTUSB_INTEL_BOOT) { 3832 hdev->manufacturer = 2; 3833 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 3834 } 3835 3836 if (id->driver_info & BTUSB_ATH3012) { 3837 data->setup_on_usb = btusb_setup_qca; 3838 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 3839 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3840 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 3841 } 3842 3843 if (id->driver_info & BTUSB_QCA_ROME) { 3844 data->setup_on_usb = btusb_setup_qca; 3845 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 3846 hdev->cmd_timeout = btusb_qca_cmd_timeout; 3847 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3848 btusb_check_needs_reset_resume(intf); 3849 } 3850 3851 if (id->driver_info & BTUSB_QCA_WCN6855) { 3852 data->setup_on_usb = btusb_setup_qca; 3853 hdev->shutdown = btusb_shutdown_qca; 3854 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855; 3855 hdev->cmd_timeout = btusb_qca_cmd_timeout; 3856 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3857 hci_set_msft_opcode(hdev, 0xFD70); 3858 } 3859 3860 if (id->driver_info & BTUSB_AMP) { 3861 /* AMP controllers do not support SCO packets */ 3862 data->isoc = NULL; 3863 } else { 3864 /* Interface orders are hardcoded in the specification */ 3865 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1); 3866 data->isoc_ifnum = ifnum_base + 1; 3867 } 3868 3869 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) && 3870 (id->driver_info & BTUSB_REALTEK)) { 3871 hdev->setup = btrtl_setup_realtek; 3872 hdev->shutdown = btrtl_shutdown_realtek; 3873 hdev->cmd_timeout = btusb_rtl_cmd_timeout; 3874 3875 /* Realtek devices need to set remote wakeup on auto-suspend */ 3876 set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags); 3877 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags); 3878 } 3879 3880 if (!reset) 3881 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3882 3883 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 3884 if (!disable_scofix) 3885 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 3886 } 3887 3888 if (id->driver_info & BTUSB_BROKEN_ISOC) 3889 data->isoc = NULL; 3890 3891 if (id->driver_info & BTUSB_WIDEBAND_SPEECH) 3892 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); 3893 3894 if (id->driver_info & BTUSB_VALID_LE_STATES) 3895 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); 3896 3897 if (id->driver_info & BTUSB_DIGIANSWER) { 3898 data->cmdreq_type = USB_TYPE_VENDOR; 3899 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3900 } 3901 3902 if (id->driver_info & BTUSB_CSR) { 3903 struct usb_device *udev = data->udev; 3904 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice); 3905 3906 /* Old firmware would otherwise execute USB reset */ 3907 if (bcdDevice < 0x117) 3908 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3909 3910 /* This must be set first in case we disable it for fakes */ 3911 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3912 3913 /* Fake CSR devices with broken commands */ 3914 if (le16_to_cpu(udev->descriptor.idVendor) == 0x0a12 && 3915 le16_to_cpu(udev->descriptor.idProduct) == 0x0001) 3916 hdev->setup = btusb_setup_csr; 3917 } 3918 3919 if (id->driver_info & BTUSB_SNIFFER) { 3920 struct usb_device *udev = data->udev; 3921 3922 /* New sniffer firmware has crippled HCI interface */ 3923 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 3924 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 3925 } 3926 3927 if (id->driver_info & BTUSB_INTEL_BOOT) { 3928 /* A bug in the bootloader causes that interrupt interface is 3929 * only enabled after receiving SetInterface(0, AltSetting=0). 3930 */ 3931 err = usb_set_interface(data->udev, 0, 0); 3932 if (err < 0) { 3933 BT_ERR("failed to set interface 0, alt 0 %d", err); 3934 goto out_free_dev; 3935 } 3936 } 3937 3938 if (data->isoc) { 3939 err = usb_driver_claim_interface(&btusb_driver, 3940 data->isoc, data); 3941 if (err < 0) 3942 goto out_free_dev; 3943 } 3944 3945 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) { 3946 if (!usb_driver_claim_interface(&btusb_driver, 3947 data->diag, data)) 3948 __set_diag_interface(hdev); 3949 else 3950 data->diag = NULL; 3951 } 3952 3953 if (enable_autosuspend) 3954 usb_enable_autosuspend(data->udev); 3955 3956 err = hci_register_dev(hdev); 3957 if (err < 0) 3958 goto out_free_dev; 3959 3960 usb_set_intfdata(intf, data); 3961 3962 return 0; 3963 3964 out_free_dev: 3965 if (data->reset_gpio) 3966 gpiod_put(data->reset_gpio); 3967 hci_free_dev(hdev); 3968 return err; 3969 } 3970 3971 static void btusb_disconnect(struct usb_interface *intf) 3972 { 3973 struct btusb_data *data = usb_get_intfdata(intf); 3974 struct hci_dev *hdev; 3975 3976 BT_DBG("intf %p", intf); 3977 3978 if (!data) 3979 return; 3980 3981 hdev = data->hdev; 3982 usb_set_intfdata(data->intf, NULL); 3983 3984 if (data->isoc) 3985 usb_set_intfdata(data->isoc, NULL); 3986 3987 if (data->diag) 3988 usb_set_intfdata(data->diag, NULL); 3989 3990 hci_unregister_dev(hdev); 3991 3992 if (intf == data->intf) { 3993 if (data->isoc) 3994 usb_driver_release_interface(&btusb_driver, data->isoc); 3995 if (data->diag) 3996 usb_driver_release_interface(&btusb_driver, data->diag); 3997 } else if (intf == data->isoc) { 3998 if (data->diag) 3999 usb_driver_release_interface(&btusb_driver, data->diag); 4000 usb_driver_release_interface(&btusb_driver, data->intf); 4001 } else if (intf == data->diag) { 4002 usb_driver_release_interface(&btusb_driver, data->intf); 4003 if (data->isoc) 4004 usb_driver_release_interface(&btusb_driver, data->isoc); 4005 } 4006 4007 if (data->oob_wake_irq) 4008 device_init_wakeup(&data->udev->dev, false); 4009 4010 if (data->reset_gpio) 4011 gpiod_put(data->reset_gpio); 4012 4013 hci_free_dev(hdev); 4014 } 4015 4016 #ifdef CONFIG_PM 4017 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 4018 { 4019 struct btusb_data *data = usb_get_intfdata(intf); 4020 4021 BT_DBG("intf %p", intf); 4022 4023 if (data->suspend_count++) 4024 return 0; 4025 4026 spin_lock_irq(&data->txlock); 4027 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 4028 set_bit(BTUSB_SUSPENDING, &data->flags); 4029 spin_unlock_irq(&data->txlock); 4030 } else { 4031 spin_unlock_irq(&data->txlock); 4032 data->suspend_count--; 4033 return -EBUSY; 4034 } 4035 4036 cancel_work_sync(&data->work); 4037 4038 btusb_stop_traffic(data); 4039 usb_kill_anchored_urbs(&data->tx_anchor); 4040 4041 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) { 4042 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 4043 enable_irq_wake(data->oob_wake_irq); 4044 enable_irq(data->oob_wake_irq); 4045 } 4046 4047 /* For global suspend, Realtek devices lose the loaded fw 4048 * in them. But for autosuspend, firmware should remain. 4049 * Actually, it depends on whether the usb host sends 4050 * set feature (enable wakeup) or not. 4051 */ 4052 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) { 4053 if (PMSG_IS_AUTO(message) && 4054 device_can_wakeup(&data->udev->dev)) 4055 data->udev->do_remote_wakeup = 1; 4056 else if (!PMSG_IS_AUTO(message) && 4057 !device_may_wakeup(&data->udev->dev)) { 4058 data->udev->do_remote_wakeup = 0; 4059 data->udev->reset_resume = 1; 4060 } 4061 } 4062 4063 return 0; 4064 } 4065 4066 static void play_deferred(struct btusb_data *data) 4067 { 4068 struct urb *urb; 4069 int err; 4070 4071 while ((urb = usb_get_from_anchor(&data->deferred))) { 4072 usb_anchor_urb(urb, &data->tx_anchor); 4073 4074 err = usb_submit_urb(urb, GFP_ATOMIC); 4075 if (err < 0) { 4076 if (err != -EPERM && err != -ENODEV) 4077 BT_ERR("%s urb %p submission failed (%d)", 4078 data->hdev->name, urb, -err); 4079 kfree(urb->setup_packet); 4080 usb_unanchor_urb(urb); 4081 usb_free_urb(urb); 4082 break; 4083 } 4084 4085 data->tx_in_flight++; 4086 usb_free_urb(urb); 4087 } 4088 4089 /* Cleanup the rest deferred urbs. */ 4090 while ((urb = usb_get_from_anchor(&data->deferred))) { 4091 kfree(urb->setup_packet); 4092 usb_free_urb(urb); 4093 } 4094 } 4095 4096 static int btusb_resume(struct usb_interface *intf) 4097 { 4098 struct btusb_data *data = usb_get_intfdata(intf); 4099 struct hci_dev *hdev = data->hdev; 4100 int err = 0; 4101 4102 BT_DBG("intf %p", intf); 4103 4104 if (--data->suspend_count) 4105 return 0; 4106 4107 /* Disable only if not already disabled (keep it balanced) */ 4108 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 4109 disable_irq(data->oob_wake_irq); 4110 disable_irq_wake(data->oob_wake_irq); 4111 } 4112 4113 if (!test_bit(HCI_RUNNING, &hdev->flags)) 4114 goto done; 4115 4116 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 4117 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 4118 if (err < 0) { 4119 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 4120 goto failed; 4121 } 4122 } 4123 4124 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 4125 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 4126 if (err < 0) { 4127 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 4128 goto failed; 4129 } 4130 4131 btusb_submit_bulk_urb(hdev, GFP_NOIO); 4132 } 4133 4134 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 4135 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 4136 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 4137 else 4138 btusb_submit_isoc_urb(hdev, GFP_NOIO); 4139 } 4140 4141 spin_lock_irq(&data->txlock); 4142 play_deferred(data); 4143 clear_bit(BTUSB_SUSPENDING, &data->flags); 4144 spin_unlock_irq(&data->txlock); 4145 schedule_work(&data->work); 4146 4147 return 0; 4148 4149 failed: 4150 usb_scuttle_anchored_urbs(&data->deferred); 4151 done: 4152 spin_lock_irq(&data->txlock); 4153 clear_bit(BTUSB_SUSPENDING, &data->flags); 4154 spin_unlock_irq(&data->txlock); 4155 4156 return err; 4157 } 4158 #endif 4159 4160 static struct usb_driver btusb_driver = { 4161 .name = "btusb", 4162 .probe = btusb_probe, 4163 .disconnect = btusb_disconnect, 4164 #ifdef CONFIG_PM 4165 .suspend = btusb_suspend, 4166 .resume = btusb_resume, 4167 #endif 4168 .id_table = btusb_table, 4169 .supports_autosuspend = 1, 4170 .disable_hub_initiated_lpm = 1, 4171 }; 4172 4173 module_usb_driver(btusb_driver); 4174 4175 module_param(disable_scofix, bool, 0644); 4176 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 4177 4178 module_param(force_scofix, bool, 0644); 4179 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 4180 4181 module_param(enable_autosuspend, bool, 0644); 4182 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default"); 4183 4184 module_param(reset, bool, 0644); 4185 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 4186 4187 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 4188 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 4189 MODULE_VERSION(VERSION); 4190 MODULE_LICENSE("GPL"); 4191